21196045832 has 16 divisors (see below), whose sum is σ = 42799708140. Its totient is φ = 9782790336.

The previous prime is 21196045823. The next prime is 21196045861. The reversal of 21196045832 is 23854069112.

It can be written as a sum of positive squares in 2 ways, for example, as 21160357156 + 35688676 = 145466^2 + 5974^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21196045832.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101903963 + ... + 101904170.

Almost surely, 2^21196045832 is an apocalyptic number.

It is an amenable number.

21196045832 is an abundant number, since it is smaller than the sum of its proper divisors (21603662308).

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

21196045832 is a wasteful number, since it uses less digits than its factorization.

21196045832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203808152 (or 203808148 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 21196045832 in words is "twenty-one billion, one hundred ninety-six million, forty-five thousand, eight hundred thirty-two".