1575165252438 has 40 divisors (see below), whose sum is σ = 3529862189832. Its totient is φ = 525006702144.

The previous prime is 1575165252431. The next prime is 1575165252449. The reversal of 1575165252438 is 8342525615751.

1575165252438 is a `hidden beast` number, since 1 + 5 + 7 + 51 + 65 + 2 + 524 + 3 + 8 = 666.

It is a super-2 number, since 2×1575165252438² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1575165252431) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1337406 + ... + 2222382.

Almost surely, 2^{1575165252438} is an apocalyptic number.

1575165252438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1575165252438 is an abundant number, since it is smaller than the sum of its proper divisors (1954696937394).

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

1575165252438 is a wasteful number, since it uses less digits than its factorization.

1575165252438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895978 (or 895969 counting only the distinct ones).

The product of its digits is 10080000, while the sum is 54.

The spelling of 1575165252438 in words is "one trillion, five hundred seventy-five billion, one hundred sixty-five million, two hundred fifty-two thousand, four hundred thirty-eight".