36381318957 has 6 divisors (see below), whose sum is σ = 52550794062. Its totient is φ = 24254212632.

The previous prime is 36381318949. The next prime is 36381318973. The reversal of 36381318957 is 75981318363.

36381318957 is a `hidden beast` number, since 36 + 381 + 3 + 189 + 57 = 666.

It can be written as a sum of positive squares in only one way, i.e., 36184028841 + 197290116 = 190221^2 + 14046^2 .

It is not a de Polignac number, because 36381318957 - 2³ = 36381318949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36381318917) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2021184378 + ... + 2021184395.

It is an arithmetic number, because the mean of its divisors is an integer number (8758465677).

Almost surely, 2^36381318957 is an apocalyptic number.

It is an amenable number.

36381318957 is a deficient number, since it is larger than the sum of its proper divisors (16169475105).

36381318957 is a wasteful number, since it uses less digits than its factorization.

36381318957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4042368779 (or 4042368776 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The spelling of 36381318957 in words is "thirty-six billion, three hundred eighty-one million, three hundred eighteen thousand, nine hundred fifty-seven".