70091381520 has 120 divisors (see below), whose sum is σ = 247779230400. Its totient is φ = 17707292928.

The previous prime is 70091381509. The next prime is 70091381567. The reversal of 70091381520 is 2518319007.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2548140 + ... + 2575499.

It is an arithmetic number, because the mean of its divisors is an integer number (2064826920).

Almost surely, 2^70091381520 is an apocalyptic number.

It is an amenable number.

70091381520 is an abundant number, since it is smaller than the sum of its proper divisors (177687848880).

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

70091381520 is a wasteful number, since it uses less digits than its factorization.

70091381520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5123677 (or 5123668 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The spelling of 70091381520 in words is "seventy billion, ninety-one million, three hundred eighty-one thousand, five hundred twenty".