70640664192 has 768 divisors, whose sum is σ = 253257840000. Its totient is φ = 19313344512.

The previous prime is 70640664139. The next prime is 70640664203. The reversal of 70640664192 is 29146604607.

It is a super-2 number, since 2×70640664192² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 648079434 + ... + 648079542.

Almost surely, 2^70640664192 is an apocalyptic number.

70640664192 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70640664192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126628920000).

70640664192 is an abundant number, since it is smaller than the sum of its proper divisors (182617175808).

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

70640664192 is a wasteful number, since it uses less digits than its factorization.

70640664192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 70640664192 in words is "seventy billion, six hundred forty million, six hundred sixty-four thousand, one hundred ninety-two".