21453631473027 has 64 divisors (see below), whose sum is σ = 31598777548800. Its totient is φ = 12866209413120.

The previous prime is 21453631472989. The next prime is 21453631473037. The reversal of 21453631473027 is 72037413635412.

It is not a de Polignac number, because 21453631473027 - 2¹² = 21453631468931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21453631473037) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 827705374 + ... + 827731292.

It is an arithmetic number, because the mean of its divisors is an integer number (493730899200).

Almost surely, 2^{21453631473027} is an apocalyptic number.

21453631473027 is a deficient number, since it is larger than the sum of its proper divisors (10145146075773).

21453631473027 is a wasteful number, since it uses less digits than its factorization.

21453631473027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29188.

The product of its (nonzero) digits is 2540160, while the sum is 48.

The spelling of 21453631473027 in words is "twenty-one trillion, four hundred fifty-three billion, six hundred thirty-one million, four hundred seventy-three thousand, twenty-seven".