23555352140 has 48 divisors (see below), whose sum is σ = 50443083264. Its totient is φ = 9237412800.

The previous prime is 23555352137. The next prime is 23555352157. The reversal of 23555352140 is 4125355532.

It is a super-2 number, since 2×23555352140² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23555352140.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241085 + ... + 324395.

It is an arithmetic number, because the mean of its divisors is an integer number (1050897568).

Almost surely, 2^23555352140 is an apocalyptic number.

23555352140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23555352140 is an abundant number, since it is smaller than the sum of its proper divisors (26887731124).

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

23555352140 is a wasteful number, since it uses less digits than its factorization.

23555352140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83598 (or 83596 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 35.

The spelling of 23555352140 in words is "twenty-three billion, five hundred fifty-five million, three hundred fifty-two thousand, one hundred forty".