15717901040 has 80 divisors (see below), whose sum is σ = 37489163040. Its totient is φ = 6125015040.

The previous prime is 15717901019. The next prime is 15717901057. The reversal of 15717901040 is 4010971751.

It is a tau number, because it is divible by the number of its divisors (80).

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, 2578316 + ... + 2584404.

It is an arithmetic number, because the mean of its divisors is an integer number (468614538).

Almost surely, 2^15717901040 is an apocalyptic number.

15717901040 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 15717901040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18744581520).

15717901040 is an abundant number, since it is smaller than the sum of its proper divisors (21771262000).

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

15717901040 is a wasteful number, since it uses less digits than its factorization.

15717901040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6930 (or 6924 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 35.

The spelling of 15717901040 in words is "fifteen billion, seven hundred seventeen million, nine hundred one thousand, forty".