21023002054 has 8 divisors (see below), whose sum is σ = 31535258040. Its totient is φ = 10511249376.

The previous prime is 21023002051. The next prime is 21023002069. The reversal of 21023002054 is 45020032012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21023002051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6382 + ... + 205150.

It is an arithmetic number, because the mean of its divisors is an integer number (3941907255).

Almost surely, 2^21023002054 is an apocalyptic number.

21023002054 is a deficient number, since it is larger than the sum of its proper divisors (10512255986).

21023002054 is a wasteful number, since it uses less digits than its factorization.

21023002054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251654.

The product of its (nonzero) digits is 480, while the sum is 19.

Adding to 21023002054 its reverse (45020032012), we get a palindrome (66043034066).

The spelling of 21023002054 in words is "twenty-one billion, twenty-three million, two thousand, fifty-four".