21046292104 has 16 divisors (see below), whose sum is σ = 39497918220. Its totient is φ = 10513513920.

The previous prime is 21046292063. The next prime is 21046292123. The reversal of 21046292104 is 40129264012.

It can be written as a sum of positive squares in 2 ways, for example, as 20996589604 + 49702500 = 144902^2 + 7050^2 .

It is a super-2 number, since 2×21046292104² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1194727 + ... + 1212214.

Almost surely, 2^21046292104 is an apocalyptic number.

It is an amenable number.

21046292104 is a deficient number, since it is larger than the sum of its proper divisors (18451626116).

21046292104 is a wasteful number, since it uses less digits than its factorization.

21046292104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2408040 (or 2408036 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 21046292104 in words is "twenty-one billion, forty-six million, two hundred ninety-two thousand, one hundred four".