70528720464 has 80 divisors (see below), whose sum is σ = 204942954240. Its totient is φ = 23509561824.

The previous prime is 70528720453. The next prime is 70528720489. The reversal of 70528720464 is 46402782507.

It is a happy number.

70528720464 is a `hidden beast` number, since 70 + 52 + 8 + 72 + 0 + 464 = 666.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 972792 + ... + 1042775.

It is an arithmetic number, because the mean of its divisors is an integer number (2561786928).

Almost surely, 2^70528720464 is an apocalyptic number.

It is an amenable number.

70528720464 is an abundant number, since it is smaller than the sum of its proper divisors (134414233776).

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

70528720464 is an equidigital number, since it uses as much as digits as its factorization.

70528720464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015596 (or 2015572 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 45.

The spelling of 70528720464 in words is "seventy billion, five hundred twenty-eight million, seven hundred twenty thousand, four hundred sixty-four".