70665407999 has 4 divisors (see below), whose sum is σ = 70671359664. Its totient is φ = 70659456336.

The previous prime is 70665407963. The next prime is 70665408007. The reversal of 70665407999 is 99970456607.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70665407999 - 2²⁴ = 70648630783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70665487999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2957987 + ... + 2981780.

It is an arithmetic number, because the mean of its divisors is an integer number (17667839916).

Almost surely, 2^70665407999 is an apocalyptic number.

70665407999 is a deficient number, since it is larger than the sum of its proper divisors (5951665).

70665407999 is a wasteful number, since it uses less digits than its factorization.

70665407999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5951664.

The product of its (nonzero) digits is 25719120, while the sum is 62.

The spelling of 70665407999 in words is "seventy billion, six hundred sixty-five million, four hundred seven thousand, nine hundred ninety-nine".