70640063836 has 6 divisors (see below), whose sum is σ = 123620111720. Its totient is φ = 35320031916.

The previous prime is 70640063831. The next prime is 70640063903. The reversal of 70640063836 is 63836004607.

It is a junction number, because it is equal to n+sod(n) for n = 70640063792 and 70640063801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70640063831) by changing a digit.

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 as a sum of consecutive naturals, namely, 8830007976 + ... + 8830007983.

Almost surely, 2^70640063836 is an apocalyptic number.

It is an amenable number.

70640063836 is a deficient number, since it is larger than the sum of its proper divisors (52980047884).

70640063836 is a wasteful number, since it uses less digits than its factorization.

70640063836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17660015963 (or 17660015961 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 43.

The spelling of 70640063836 in words is "seventy billion, six hundred forty million, sixty-three thousand, eight hundred thirty-six".