70831393644 has 24 divisors (see below), whose sum is σ = 180298093248. Its totient is φ = 21464058640.

The previous prime is 70831393637. The next prime is 70831393681. The reversal of 70831393644 is 44639313807.

It is a junction number, because it is equal to n+sod(n) for n = 70831393593 and 70831393602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268300602 + ... + 268300865.

It is an arithmetic number, because the mean of its divisors is an integer number (7512420552).

Almost surely, 2^70831393644 is an apocalyptic number.

It is an amenable number.

70831393644 is an abundant number, since it is smaller than the sum of its proper divisors (109466699604).

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

70831393644 is a wasteful number, since it uses less digits than its factorization.

70831393644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536601485 (or 536601483 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 48.

The spelling of 70831393644 in words is "seventy billion, eight hundred thirty-one million, three hundred ninety-three thousand, six hundred forty-four".