21272175452004 has 48 divisors (see below), whose sum is σ = 49735708780800. Its totient is φ = 7076355768576.

The previous prime is 21272175451909. The next prime is 21272175452009. The reversal of 21272175452004 is 40025457127212.

It is not an unprimeable number, because it can be changed into a prime (21272175452009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25030002 + ... + 25865910.

It is an arithmetic number, because the mean of its divisors is an integer number (1036160599600).

Almost surely, 2^{21272175452004} is an apocalyptic number.

It is an amenable number.

21272175452004 is an abundant number, since it is smaller than the sum of its proper divisors (28463533328796).

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

21272175452004 is a wasteful number, since it uses less digits than its factorization.

21272175452004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840212 (or 840210 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 42.

The spelling of 21272175452004 in words is "twenty-one trillion, two hundred seventy-two billion, one hundred seventy-five million, four hundred fifty-two thousand, four".