21253100262552 has 32 divisors (see below), whose sum is σ = 59036389618800. Its totient is φ = 7084366754112.

The previous prime is 21253100262509. The next prime is 21253100262599. The reversal of 21253100262552 is 25526200135212.

21253100262552 is a `hidden beast` number, since 2 + 1 + 25 + 3 + 1 + 0 + 0 + 2 + 625 + 5 + 2 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49196991133 + ... + 49196991564.

Almost surely, 2^{21253100262552} is an apocalyptic number.

It is an amenable number.

21253100262552 is an abundant number, since it is smaller than the sum of its proper divisors (37783289356248).

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

21253100262552 is a wasteful number, since it uses less digits than its factorization.

21253100262552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98393982712 (or 98393982702 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 21253100262552 its reverse (25526200135212), we get a palindrome (46779300397764).

The spelling of 21253100262552 in words is "twenty-one trillion, two hundred fifty-three billion, one hundred million, two hundred sixty-two thousand, five hundred fifty-two".