21272593025028 has 48 divisors (see below), whose sum is σ = 52984368138240. Its totient is φ = 6623046007200.

The previous prime is 21272593025023. The next prime is 21272593025069. The reversal of 21272593025028 is 82052039527212.

It is not an unprimeable number, because it can be changed into a prime (21272593025023) 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 15 ways as a sum of consecutive naturals, for example, 657032028 + ... + 657064403.

It is an arithmetic number, because the mean of its divisors is an integer number (1103841002880).

Almost surely, 2^{21272593025028} is an apocalyptic number.

It is an amenable number.

21272593025028 is an abundant number, since it is smaller than the sum of its proper divisors (31711775113212).

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

21272593025028 is a wasteful number, since it uses less digits than its factorization.

21272593025028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314096528 (or 1314096526 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 21272593025028 in words is "twenty-one trillion, two hundred seventy-two billion, five hundred ninety-three million, twenty-five thousand, twenty-eight".