70021667496864 has 48 divisors (see below), whose sum is σ = 188289971755200. Its totient is φ = 22771273981440.

The previous prime is 70021667496821. The next prime is 70021667496883. The reversal of 70021667496864 is 46869476612007.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 70021667496795 and 70021667496804.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8895024964 + ... + 8895032835.

It is an arithmetic number, because the mean of its divisors is an integer number (3922707744900).

Almost surely, 2^{70021667496864} is an apocalyptic number.

It is an amenable number.

70021667496864 is an abundant number, since it is smaller than the sum of its proper divisors (118268304258336).

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

70021667496864 is a wasteful number, since it uses less digits than its factorization.

70021667496864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17790057853 (or 17790057845 counting only the distinct ones).

The product of its (nonzero) digits is 146313216, while the sum is 66.

The spelling of 70021667496864 in words is "seventy trillion, twenty-one billion, six hundred sixty-seven million, four hundred ninety-six thousand, eight hundred sixty-four".