21803412954 has 32 divisors (see below), whose sum is σ = 45435096000. Its totient is φ = 6966699264.

The previous prime is 21803412929. The next prime is 21803412989. The reversal of 21803412954 is 45921430812.

It is a super-2 number, since 2×21803412954² (a number of 21 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 426559 + ... + 474930.

It is an arithmetic number, because the mean of its divisors is an integer number (1419846750).

Almost surely, 2^21803412954 is an apocalyptic number.

21803412954 is an abundant number, since it is smaller than the sum of its proper divisors (23631683046).

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

21803412954 is a wasteful number, since it uses less digits than its factorization.

21803412954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901662.

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 21803412954 in words is "twenty-one billion, eight hundred three million, four hundred twelve thousand, nine hundred fifty-four".