21151432346260 has 12 divisors (see below), whose sum is σ = 44418007927188. Its totient is φ = 8460572938496.

The previous prime is 21151432346203. The next prime is 21151432346281. The reversal of 21151432346260 is 6264323415112.

It can be written as a sum of positive squares in 2 ways, for example, as 3444134682244 + 17707297664016 = 1855838^2 + 4208004^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528785808637 + ... + 528785808676.

It is an arithmetic number, because the mean of its divisors is an integer number (3701500660599).

Almost surely, 2^{21151432346260} is an apocalyptic number.

21151432346260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21151432346260 is an abundant number, since it is smaller than the sum of its proper divisors (23266575580928).

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

21151432346260 is a wasteful number, since it uses less digits than its factorization.

21151432346260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057571617322 (or 1057571617320 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 21151432346260 in words is "twenty-one trillion, one hundred fifty-one billion, four hundred thirty-two million, three hundred forty-six thousand, two hundred sixty".