15878690032 has 40 divisors (see below), whose sum is σ = 32446415360. Its totient is φ = 7507028160.

The previous prime is 15878690029. The next prime is 15878690033. The reversal of 15878690032 is 23009687851.

15878690032 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×15878690032² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15878690033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109057 + ... + 208927.

It is an arithmetic number, because the mean of its divisors is an integer number (811160384).

Almost surely, 2^15878690032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15878690032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16223207680).

15878690032 is an abundant number, since it is smaller than the sum of its proper divisors (16567725328).

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

15878690032 is a wasteful number, since it uses less digits than its factorization.

15878690032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100421 (or 100415 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 15878690032 in words is "fifteen billion, eight hundred seventy-eight million, six hundred ninety thousand, thirty-two".