215444404012 has 24 divisors (see below), whose sum is σ = 405972015120. Its totient is φ = 99667200000.

The previous prime is 215444404003. The next prime is 215444404027. The reversal of 215444404012 is 210404444512.

It is a super-2 number, since 2×215444404012² (a number of 23 digits) contains 22 as substring.

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, 26845989 + ... + 26854012.

It is an arithmetic number, because the mean of its divisors is an integer number (16915500630).

Almost surely, 2^215444404012 is an apocalyptic number.

It is an amenable number.

215444404012 is a deficient number, since it is larger than the sum of its proper divisors (190527611108).

215444404012 is a wasteful number, since it uses less digits than its factorization.

215444404012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53700081 (or 53700079 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 31.

Adding to 215444404012 its reverse (210404444512), we get a palindrome (425848848524).

The spelling of 215444404012 in words is "two hundred fifteen billion, four hundred forty-four million, four hundred four thousand, twelve".