23503211451620 has 24 divisors (see below), whose sum is σ = 49357117434744. Its totient is φ = 9401213459456.

The previous prime is 23503211451593. The next prime is 23503211451623. The reversal of 23503211451620 is 2615411230532.

It can be written as a sum of positive squares in 4 ways, for example, as 12820524491776 + 10682686959844 = 3580576^2 + 3268438^2 .

It is not an unprimeable number, because it can be changed into a prime (23503211451623) 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, 1693709 + ... + 7062228.

It is an arithmetic number, because the mean of its divisors is an integer number (2056546559781).

Almost surely, 2^{23503211451620} is an apocalyptic number.

23503211451620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23503211451620 is an abundant number, since it is smaller than the sum of its proper divisors (25853905983124).

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

23503211451620 is a wasteful number, since it uses less digits than its factorization.

23503211451620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8890159 (or 8890157 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 23503211451620 in words is "twenty-three trillion, five hundred three billion, two hundred eleven million, four hundred fifty-one thousand, six hundred twenty".