70491214464 has 128 divisors (see below), whose sum is σ = 210853877760. Its totient is φ = 20671872000.

The previous prime is 70491214379. The next prime is 70491214471. The reversal of 70491214464 is 46441219407.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×70491214464² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138222 + ... + 400109.

It is an arithmetic number, because the mean of its divisors is an integer number (1647295920).

Almost surely, 2^70491214464 is an apocalyptic number.

It is an amenable number.

70491214464 is an abundant number, since it is smaller than the sum of its proper divisors (140362663296).

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

70491214464 is a wasteful number, since it uses less digits than its factorization.

70491214464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538390 (or 538378 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The spelling of 70491214464 in words is "seventy billion, four hundred ninety-one million, two hundred fourteen thousand, four hundred sixty-four".