36659252521 has 4 divisors (see below), whose sum is σ = 36811365844. Its totient is φ = 36507139200.

The previous prime is 36659252491. The next prime is 36659252569. The reversal of 36659252521 is 12525295663.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20748962025 + 15910290496 = 144045^2 + 126136^2 .

It is a cyclic number.

It is not a de Polignac number, because 36659252521 - 2⁷ = 36659252393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36659252221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76056300 + ... + 76056781.

It is an arithmetic number, because the mean of its divisors is an integer number (9202841461).

Almost surely, 2^36659252521 is an apocalyptic number.

It is an amenable number.

36659252521 is a deficient number, since it is larger than the sum of its proper divisors (152113323).

36659252521 is a wasteful number, since it uses less digits than its factorization.

36659252521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152113322.

The product of its digits is 972000, while the sum is 46.

It can be divided in two parts, 36659 and 252521, that added together give a triangular number (289180 = T₇₆₀).

The spelling of 36659252521 in words is "thirty-six billion, six hundred fifty-nine million, two hundred fifty-two thousand, five hundred twenty-one".