21054453192 has 48 divisors (see below), whose sum is σ = 57471498240. Its totient is φ = 6962887008.

The previous prime is 21054453187. The next prime is 21054453193. The reversal of 21054453192 is 29135445012.

21054453192 is a `hidden beast` number, since 2 + 10 + 5 + 4 + 453 + 192 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (21054453193) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1142128 + ... + 1160415.

It is an arithmetic number, because the mean of its divisors is an integer number (1197322880).

Almost surely, 2^21054453192 is an apocalyptic number.

It is an amenable number.

21054453192 is an abundant number, since it is smaller than the sum of its proper divisors (36417045048).

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

21054453192 is a wasteful number, since it uses less digits than its factorization.

21054453192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2302682 (or 2302675 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 21054453192 in words is "twenty-one billion, fifty-four million, four hundred fifty-three thousand, one hundred ninety-two".