15742572040 has 128 divisors (see below), whose sum is σ = 39286114560. Its totient is φ = 5639721984.

The previous prime is 15742572031. The next prime is 15742572059. The reversal of 15742572040 is 4027524751.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8522397 + ... + 8524243.

It is an arithmetic number, because the mean of its divisors is an integer number (306922770).

Almost surely, 2^15742572040 is an apocalyptic number.

15742572040 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 15742572040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19643057280).

15742572040 is an abundant number, since it is smaller than the sum of its proper divisors (23543542520).

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

15742572040 is a wasteful number, since it uses less digits than its factorization.

15742572040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2351 (or 2347 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 37.

The spelling of 15742572040 in words is "fifteen billion, seven hundred forty-two million, five hundred seventy-two thousand, forty".