20076073681 has 2 divisors, whose sum is σ = 20076073682. Its totient is φ = 20076073680.

The previous prime is 20076073673. The next prime is 20076073729. The reversal of 20076073681 is 18637067002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11000653456 + 9075420225 = 104884^2 + 95265^2 .

It is a cyclic number.

It is not a de Polignac number, because 20076073681 - 2³ = 20076073673 is a prime.

It is a super-2 number, since 2×20076073681² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20076053681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10038036840 + 10038036841.

It is an arithmetic number, because the mean of its divisors is an integer number (10038036841).

Almost surely, 2^20076073681 is an apocalyptic number.

It is an amenable number.

20076073681 is a deficient number, since it is larger than the sum of its proper divisors (1).

20076073681 is an equidigital number, since it uses as much as digits as its factorization.

20076073681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 40.

The spelling of 20076073681 in words is "twenty billion, seventy-six million, seventy-three thousand, six hundred eighty-one".