78961104668 has 6 divisors (see below), whose sum is σ = 138181933176. Its totient is φ = 39480552332.

The previous prime is 78961104667. The next prime is 78961104689. The reversal of 78961104668 is 86640116987.

It is a super-3 number, since 3×78961104668³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78961104667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9870138080 + ... + 9870138087.

It is an arithmetic number, because the mean of its divisors is an integer number (23030322196).

Almost surely, 2^78961104668 is an apocalyptic number.

It is an amenable number.

78961104668 is a deficient number, since it is larger than the sum of its proper divisors (59220828508).

78961104668 is a wasteful number, since it uses less digits than its factorization.

78961104668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19740276171 (or 19740276169 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 56.

The spelling of 78961104668 in words is "seventy-eight billion, nine hundred sixty-one million, one hundred four thousand, six hundred sixty-eight".