23551411220 has 12 divisors (see below), whose sum is σ = 49457963604. Its totient is φ = 9420564480.

The previous prime is 23551411187. The next prime is 23551411243. The reversal of 23551411220 is 2211415532.

It can be written as a sum of positive squares in 2 ways, for example, as 9954451984 + 13596959236 = 99772^2 + 116606^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23551411220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 588785261 + ... + 588785300.

It is an arithmetic number, because the mean of its divisors is an integer number (4121496967).

Almost surely, 2^23551411220 is an apocalyptic number.

23551411220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23551411220 is an abundant number, since it is smaller than the sum of its proper divisors (25906552384).

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

23551411220 is a wasteful number, since it uses less digits than its factorization.

23551411220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177570570 (or 1177570568 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 23551411220 its reverse (2211415532), we get a palindrome (25762826752).

The spelling of 23551411220 in words is "twenty-three billion, five hundred fifty-one million, four hundred eleven thousand, two hundred twenty".