15112612540 has 48 divisors (see below), whose sum is σ = 33462374400. Its totient is φ = 5717362752.

The previous prime is 15112612531. The next prime is 15112612573. The reversal of 15112612540 is 4521621151.

It is a junction number, because it is equal to n+sod(n) for n = 15112612499 and 15112612508.

It is a congruent number.

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, 197901 + ... + 263419.

It is an arithmetic number, because the mean of its divisors is an integer number (697132800).

Almost surely, 2^15112612540 is an apocalyptic number.

15112612540 is a gapful number since it is divisible by the number (10) 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 15112612540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16731187200).

15112612540 is an abundant number, since it is smaller than the sum of its proper divisors (18349761860).

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

15112612540 is a wasteful number, since it uses less digits than its factorization.

15112612540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66154 (or 66152 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 28.

The spelling of 15112612540 in words is "fifteen billion, one hundred twelve million, six hundred twelve thousand, five hundred forty".