21263403314524 has 24 divisors (see below), whose sum is σ = 42903150056928. Its totient is φ = 9032242114560.

The previous prime is 21263403314467. The next prime is 21263403314567. The reversal of 21263403314524 is 42541330436212.

It is a super-2 number, since 2×21263403314524² (a number of 27 digits) contains 22 as substring.

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, 3360205957 + ... + 3360212284.

It is an arithmetic number, because the mean of its divisors is an integer number (1787631252372).

Almost surely, 2^{21263403314524} is an apocalyptic number.

It is an amenable number.

21263403314524 is an abundant number, since it is smaller than the sum of its proper divisors (21639746742404).

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

21263403314524 is a wasteful number, since it uses less digits than its factorization.

21263403314524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6720418365 (or 6720418363 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 40.

The spelling of 21263403314524 in words is "twenty-one trillion, two hundred sixty-three billion, four hundred three million, three hundred fourteen thousand, five hundred twenty-four".