15906532987488 has 192 divisors, whose sum is σ = 49270521307392. Its totient is φ = 4429778196480.

The previous prime is 15906532987481. The next prime is 15906532987507. The reversal of 15906532987488 is 88478923560951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15906532987481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 564070 + ... + 5668442.

It is an arithmetic number, because the mean of its divisors is an integer number (256617298476).

It is a 1-persistent number, because it is pandigital, but 2⋅15906532987488 = 31813065974976 is not.

Almost surely, 2^{15906532987488} 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 15906532987488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24635260653696).

15906532987488 is an abundant number, since it is smaller than the sum of its proper divisors (33363988319904).

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

15906532987488 is a wasteful number, since it uses less digits than its factorization.

15906532987488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5104637 (or 5104629 counting only the distinct ones).

The product of its (nonzero) digits is 1045094400, while the sum is 75.

The spelling of 15906532987488 in words is "fifteen trillion, nine hundred six billion, five hundred thirty-two million, nine hundred eighty-seven thousand, four hundred eighty-eight".