21081484762 has 48 divisors (see below), whose sum is σ = 35859085920. Its totient is φ = 9239082336.

The previous prime is 21081484679. The next prime is 21081484843. The reversal of 21081484762 is 26748418012.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1906293 + ... + 1917319.

It is an arithmetic number, because the mean of its divisors is an integer number (747064290).

Almost surely, 2^21081484762 is an apocalyptic number.

21081484762 is a deficient number, since it is larger than the sum of its proper divisors (14777601158).

21081484762 is a wasteful number, since it uses less digits than its factorization.

21081484762 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11227 (or 11204 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 43.

The spelling of 21081484762 in words is "twenty-one billion, eighty-one million, four hundred eighty-four thousand, seven hundred sixty-two".