23522155140 has 96 divisors (see below), whose sum is σ = 72415494144. Its totient is φ = 5657420160.

The previous prime is 23522155123. The next prime is 23522155159. The reversal of 23522155140 is 4155122532.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 23522155098 and 23522155107.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56494 + ... + 224133.

It is an arithmetic number, because the mean of its divisors is an integer number (754328064).

Almost surely, 2^23522155140 is an apocalyptic number.

23522155140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23522155140 is an abundant number, since it is smaller than the sum of its proper divisors (48893339004).

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

23522155140 is a wasteful number, since it uses less digits than its factorization.

23522155140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280777 (or 280775 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 23522155140 its reverse (4155122532), we get a palindrome (27677277672).

The spelling of 23522155140 in words is "twenty-three billion, five hundred twenty-two million, one hundred fifty-five thousand, one hundred forty".