21502265414260 has 24 divisors (see below), whose sum is σ = 45162736889760. Its totient is φ = 8599386257184.

The previous prime is 21502265414213. The next prime is 21502265414261. The reversal of 21502265414260 is 6241456220512.

It is a super-2 number, since 2×21502265414260² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21502265414261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94878274 + ... + 95104633.

It is an arithmetic number, because the mean of its divisors is an integer number (1881780703740).

Almost surely, 2^{21502265414260} is an apocalyptic number.

21502265414260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21502265414260 is an abundant number, since it is smaller than the sum of its proper divisors (23660471475500).

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

21502265414260 is a wasteful number, since it uses less digits than its factorization.

21502265414260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189988575 (or 189988573 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 40.

The spelling of 21502265414260 in words is "twenty-one trillion, five hundred two billion, two hundred sixty-five million, four hundred fourteen thousand, two hundred sixty".