36551433634640 has 80 divisors (see below), whose sum is σ = 87281961616272. Its totient is φ = 14224923205632.

The previous prime is 36551433634613. The next prime is 36551433634649. The reversal of 36551433634640 is 4643633415563.

It can be written as a sum of positive squares in 8 ways, for example, as 6357639502096 + 30193794132544 = 2521436^2 + 5494888^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36551433634649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90483992 + ... + 90887048.

Almost surely, 2^{36551433634640} is an apocalyptic number.

It is an amenable number.

36551433634640 is an abundant number, since it is smaller than the sum of its proper divisors (50730527981632).

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

36551433634640 is a wasteful number, since it uses less digits than its factorization.

36551433634640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433744 (or 433738 counting only the distinct ones).

The product of its (nonzero) digits is 27993600, while the sum is 53.

The spelling of 36551433634640 in words is "thirty-six trillion, five hundred fifty-one billion, four hundred thirty-three million, six hundred thirty-four thousand, six hundred forty".