70391461521 has 64 divisors (see below), whose sum is σ = 102593433600. Its totient is φ = 42805737216.

The previous prime is 70391461513. The next prime is 70391461571. The reversal of 70391461521 is 12516419307.

It is not a de Polignac number, because 70391461521 - 2³ = 70391461513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70391461521.

It is not an unprimeable number, because it can be changed into a prime (70391461571) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 83898820 + ... + 83899658.

It is an arithmetic number, because the mean of its divisors is an integer number (1603022400).

Almost surely, 2^70391461521 is an apocalyptic number.

It is an amenable number.

70391461521 is a deficient number, since it is larger than the sum of its proper divisors (32201972079).

70391461521 is a wasteful number, since it uses less digits than its factorization.

70391461521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518.

The product of its (nonzero) digits is 45360, while the sum is 39.

The spelling of 70391461521 in words is "seventy billion, three hundred ninety-one million, four hundred sixty-one thousand, five hundred twenty-one".