21262632746 has 16 divisors (see below), whose sum is σ = 33575429760. Its totient is φ = 10070917920.

The previous prime is 21262632737. The next prime is 21262632761. The reversal of 21262632746 is 64723626212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 803486 + ... + 829526.

It is an arithmetic number, because the mean of its divisors is an integer number (2098464360).

Almost surely, 2^21262632746 is an apocalyptic number.

21262632746 is a deficient number, since it is larger than the sum of its proper divisors (12312797014).

21262632746 is a wasteful number, since it uses less digits than its factorization.

21262632746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47549.

The product of its digits is 290304, while the sum is 41.

The spelling of 21262632746 in words is "twenty-one billion, two hundred sixty-two million, six hundred thirty-two thousand, seven hundred forty-six".