70983879687 has 64 divisors (see below), whose sum is σ = 121718784000. Its totient is φ = 40047527520.

The previous prime is 70983879671. The next prime is 70983879689. The reversal of 70983879687 is 78697838907.

70983879687 is a `hidden beast` number, since 70 + 98 + 387 + 96 + 8 + 7 = 666.

It is not a de Polignac number, because 70983879687 - 2⁴ = 70983879671 is a prime.

It is a super-2 number, since 2×70983879687² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70983879689) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4919838 + ... + 4934244.

It is an arithmetic number, because the mean of its divisors is an integer number (1901856000).

Almost surely, 2^70983879687 is an apocalyptic number.

70983879687 is a deficient number, since it is larger than the sum of its proper divisors (50734904313).

70983879687 is a wasteful number, since it uses less digits than its factorization.

70983879687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14753 (or 14747 counting only the distinct ones).

The product of its (nonzero) digits is 256048128, while the sum is 72.

The spelling of 70983879687 in words is "seventy billion, nine hundred eighty-three million, eight hundred seventy-nine thousand, six hundred eighty-seven".