21105462054 has 8 divisors (see below), whose sum is σ = 42210924120. Its totient is φ = 7035154016.

The previous prime is 21105462023. The next prime is 21105462109. The reversal of 21105462054 is 45026450112.

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

21105462054 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1758788499 + ... + 1758788510.

It is an arithmetic number, because the mean of its divisors is an integer number (5276365515).

Almost surely, 2^21105462054 is an apocalyptic number.

21105462054 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21105462054 is a wasteful number, since it uses less digits than its factorization.

21105462054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3517577014.

The product of its (nonzero) digits is 9600, while the sum is 30.

The spelling of 21105462054 in words is "twenty-one billion, one hundred five million, four hundred sixty-two thousand, fifty-four".