23351217620 has 12 divisors (see below), whose sum is σ = 49037557044. Its totient is φ = 9340487040.

The previous prime is 23351217587. The next prime is 23351217623. The reversal of 23351217620 is 2671215332.

It can be written as a sum of positive squares in 2 ways, for example, as 9801792016 + 13549425604 = 99004^2 + 116402^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23351217623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 583780421 + ... + 583780460.

It is an arithmetic number, because the mean of its divisors is an integer number (4086463087).

Almost surely, 2^23351217620 is an apocalyptic number.

23351217620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23351217620 is an abundant number, since it is smaller than the sum of its proper divisors (25686339424).

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

23351217620 is a wasteful number, since it uses less digits than its factorization.

23351217620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167560890 (or 1167560888 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The spelling of 23351217620 in words is "twenty-three billion, three hundred fifty-one million, two hundred seventeen thousand, six hundred twenty".