15654512140 has 24 divisors (see below), whose sum is σ = 33270557040. Its totient is φ = 6186360768.

The previous prime is 15654512119. The next prime is 15654512143. The reversal of 15654512140 is 4121545651.

It is a junction number, because it is equal to n+sod(n) for n = 15654512096 and 15654512105.

It is not an unprimeable number, because it can be changed into a prime (15654512143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4713555 + ... + 4716874.

It is an arithmetic number, because the mean of its divisors is an integer number (1386273210).

Almost surely, 2^15654512140 is an apocalyptic number.

15654512140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15654512140 is an abundant number, since it is smaller than the sum of its proper divisors (17616044900).

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

15654512140 is a wasteful number, since it uses less digits than its factorization.

15654512140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9430521 (or 9430519 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 34.

The spelling of 15654512140 in words is "fifteen billion, six hundred fifty-four million, five hundred twelve thousand, one hundred forty".