36551136564 has 18 divisors (see below), whose sum is σ = 92393150850. Its totient is φ = 12183712176.

The previous prime is 36551136553. The next prime is 36551136571. The reversal of 36551136564 is 46563115563.

It is a happy number.

36551136564 is a `hidden beast` number, since 3 + 6 + 5 + 51 + 1 + 36 + 564 = 666.

It can be written as a sum of positive squares in only one way, i.e., 32709616164 + 3841520400 = 180858^2 + 61980^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 507654639 + ... + 507654710.

It is an arithmetic number, because the mean of its divisors is an integer number (5132952825).

Almost surely, 2^36551136564 is an apocalyptic number.

It is an amenable number.

36551136564 is an abundant number, since it is smaller than the sum of its proper divisors (55842014286).

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

36551136564 is a wasteful number, since it uses less digits than its factorization.

36551136564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015309359 (or 1015309354 counting only the distinct ones).

The product of its digits is 972000, while the sum is 45.

It can be divided in two parts, 36 and 551136564, that added together give a triangular number (551136600 = T₃₃₂₀₀).

The spelling of 36551136564 in words is "thirty-six billion, five hundred fifty-one million, one hundred thirty-six thousand, five hundred sixty-four".