70117993656 has 32 divisors (see below), whose sum is σ = 194772205200. Its totient is φ = 23372664480.

The previous prime is 70117993639. The next prime is 70117993657. The reversal of 70117993656 is 65639971107.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70117993657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162309955 + ... + 162310386.

Almost surely, 2^70117993656 is an apocalyptic number.

It is an amenable number.

70117993656 is an abundant number, since it is smaller than the sum of its proper divisors (124654211544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70117993656 is a wasteful number, since it uses less digits than its factorization.

70117993656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324620356 (or 324620346 counting only the distinct ones).

The product of its (nonzero) digits is 2143260, while the sum is 54.

The spelling of 70117993656 in words is "seventy billion, one hundred seventeen million, nine hundred ninety-three thousand, six hundred fifty-six".