75010802161 has 3 divisors (see below), whose sum is σ = 75011076043. Its totient is φ = 75010528280.

The previous prime is 75010802147. The next prime is 75010802171. The reversal of 75010802161 is 16120801057.

The square root of 75010802161 is 273881.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 71245752561 + 3765049600 = 266919^2 + 61360^2 .

It is not a de Polignac number, because 75010802161 - 2²³ = 75002413553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75010802131) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 136941 + ... + 410821.

Almost surely, 2^75010802161 is an apocalyptic number.

75010802161 is the 273881-st square number.

75010802161 is the 136941-st centered octagonal number.

It is an amenable number.

75010802161 is a deficient number, since it is larger than the sum of its proper divisors (273882).

75010802161 is an frugal number, since it uses more digits than its factorization.

75010802161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547762 (or 273881 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 31.

The spelling of 75010802161 in words is "seventy-five billion, ten million, eight hundred two thousand, one hundred sixty-one".