7565052138 has 64 divisors (see below), whose sum is σ = 17441740800. Its totient is φ = 2142729792.

The previous prime is 7565052137. The next prime is 7565052163. The reversal of 7565052138 is 8312505657.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7565052138.

It is not an unprimeable number, because it can be changed into a prime (7565052137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4648881 + ... + 4650507.

It is an arithmetic number, because the mean of its divisors is an integer number (272527200).

Almost surely, 2^7565052138 is an apocalyptic number.

7565052138 is an abundant number, since it is smaller than the sum of its proper divisors (9876688662).

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

7565052138 is a wasteful number, since it uses less digits than its factorization.

7565052138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2531.

The product of its (nonzero) digits is 252000, while the sum is 42.

The square root of 7565052138 is about 86977.3081786278. The cubic root of 7565052138 is about 1963.0768813118.

The spelling of 7565052138 in words is "seven billion, five hundred sixty-five million, fifty-two thousand, one hundred thirty-eight".