76940929669 has 2 divisors, whose sum is σ = 76940929670. Its totient is φ = 76940929668.

The previous prime is 76940929649. The next prime is 76940929693. The reversal of 76940929669 is 96692904967.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75672857569 + 1268072100 = 275087^2 + 35610^2 .

It is an emirp because it is prime and its reverse (96692904967) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76940929669 - 2²⁷ = 76806711941 is a prime.

It is a super-2 number, since 2×76940929669² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76940929649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38470464834 + 38470464835.

It is an arithmetic number, because the mean of its divisors is an integer number (38470464835).

Almost surely, 2^76940929669 is an apocalyptic number.

It is an amenable number.

76940929669 is a deficient number, since it is larger than the sum of its proper divisors (1).

76940929669 is an equidigital number, since it uses as much as digits as its factorization.

76940929669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79361856, while the sum is 67.

The spelling of 76940929669 in words is "seventy-six billion, nine hundred forty million, nine hundred twenty-nine thousand, six hundred sixty-nine".