21473340519740 has 24 divisors (see below), whose sum is σ = 45094106756160. Its totient is φ = 8589318747968.

The previous prime is 21473340519731. The next prime is 21473340519781. The reversal of 21473340519740 is 4791504337412.

It is a super-2 number, since 2×21473340519740² (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, 14262701 + ... + 15696219.

It is an arithmetic number, because the mean of its divisors is an integer number (1878921114840).

Almost surely, 2^{21473340519740} is an apocalyptic number.

21473340519740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21473340519740 is an abundant number, since it is smaller than the sum of its proper divisors (23620766236420).

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

21473340519740 is a wasteful number, since it uses less digits than its factorization.

21473340519740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2182501 (or 2182499 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 21473340519740 in words is "twenty-one trillion, four hundred seventy-three billion, three hundred forty million, five hundred nineteen thousand, seven hundred forty".