70491509312 has 28 divisors (see below), whose sum is σ = 159864673920. Its totient is φ = 30210646656.

The previous prime is 70491509287. The next prime is 70491509323. The reversal of 70491509312 is 21390519407.

It is a tau number, because it is divible by the number of its divisors (28).

It is a self number, because there is not a number n which added to its sum of digits gives 70491509312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78673112 + ... + 78674007.

It is an arithmetic number, because the mean of its divisors is an integer number (5709452640).

Almost surely, 2^70491509312 is an apocalyptic number.

It is an amenable number.

70491509312 is an abundant number, since it is smaller than the sum of its proper divisors (89373164608).

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

70491509312 is a wasteful number, since it uses less digits than its factorization.

70491509312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157347138 (or 157347128 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 41.

The spelling of 70491509312 in words is "seventy billion, four hundred ninety-one million, five hundred nine thousand, three hundred twelve".