23551254540 has 288 divisors, whose sum is σ = 79652401920. Its totient is φ = 5584550400.

The previous prime is 23551254533. The next prime is 23551254553. The reversal of 23551254540 is 4545215532.

23551254540 is a `hidden beast` number, since 2 + 3 + 55 + 12 + 54 + 540 = 666.

It is a super-2 number, since 2×23551254540² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 23551254495 and 23551254504.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 27416631 + ... + 27417489.

It is an arithmetic number, because the mean of its divisors is an integer number (276570840).

Almost surely, 2^23551254540 is an apocalyptic number.

23551254540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23551254540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39826200960).

23551254540 is an abundant number, since it is smaller than the sum of its proper divisors (56101147380).

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

23551254540 is a wasteful number, since it uses less digits than its factorization.

23551254540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173 (or 1168 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 23551254540 in words is "twenty-three billion, five hundred fifty-one million, two hundred fifty-four thousand, five hundred forty".