15962990840 has 128 divisors (see below), whose sum is σ = 39719030400. Its totient is φ = 5752750080.

The previous prime is 15962990839. The next prime is 15962990843. The reversal of 15962990840 is 4809926951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15962990843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1086584 + ... + 1101176.

It is an arithmetic number, because the mean of its divisors is an integer number (310304925).

Almost surely, 2^15962990840 is an apocalyptic number.

15962990840 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 15962990840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19859515200).

15962990840 is an abundant number, since it is smaller than the sum of its proper divisors (23756039560).

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

15962990840 is a wasteful number, since it uses less digits than its factorization.

15962990840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14697 (or 14693 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 53.

The spelling of 15962990840 in words is "fifteen billion, nine hundred sixty-two million, nine hundred ninety thousand, eight hundred forty".