15742400052 has 24 divisors (see below), whose sum is σ = 37334436832. Its totient is φ = 5161442400.

The previous prime is 15742400033. The next prime is 15742400059. The reversal of 15742400052 is 25000424751.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 15742399992 and 15742400019.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15742400059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10752274 + ... + 10753737.

Almost surely, 2^15742400052 is an apocalyptic number.

15742400052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15742400052 is an abundant number, since it is smaller than the sum of its proper divisors (21592036780).

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

15742400052 is a wasteful number, since it uses less digits than its factorization.

15742400052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21506079 (or 21506077 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 30.

The spelling of 15742400052 in words is "fifteen billion, seven hundred forty-two million, four hundred thousand, fifty-two".