13915387332 has 384 divisors, whose sum is σ = 47934996480. Its totient is φ = 3379691520.

The previous prime is 13915387309. The next prime is 13915387397. The reversal of 13915387332 is 23378351931.

13915387332 is a `hidden beast` number, since 13 + 9 + 1 + 538 + 73 + 32 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 36332413 + ... + 36332795.

It is an arithmetic number, because the mean of its divisors is an integer number (124830720).

Almost surely, 2^13915387332 is an apocalyptic number.

13915387332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is a pronic number, being equal to 117963×117964.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13915387332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23967498240).

13915387332 is an abundant number, since it is smaller than the sum of its proper divisors (34019609148).

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

13915387332 is a wasteful number, since it uses less digits than its factorization.

With its successor (13915387333) it forms an eRAP, since the sums of their prime factors are consecutive (688 and 689).

13915387332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688 (or 680 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The spelling of 13915387332 in words is "thirteen billion, nine hundred fifteen million, three hundred eighty-seven thousand, three hundred thirty-two".