21390762954 has 16 divisors (see below), whose sum is σ = 46670755680. Its totient is φ = 6482049360.

The previous prime is 21390762919. The next prime is 21390762961. The reversal of 21390762954 is 45926709312.

It is a super-2 number, since 2×21390762954² (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 7 ways as a sum of consecutive naturals, for example, 162051169 + ... + 162051300.

It is an arithmetic number, because the mean of its divisors is an integer number (2916922230).

Almost surely, 2^21390762954 is an apocalyptic number.

21390762954 is an abundant number, since it is smaller than the sum of its proper divisors (25279992726).

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

21390762954 is a wasteful number, since it uses less digits than its factorization.

21390762954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324102485.

The product of its (nonzero) digits is 816480, while the sum is 48.

The spelling of 21390762954 in words is "twenty-one billion, three hundred ninety million, seven hundred sixty-two thousand, nine hundred fifty-four".