36501772387 has 4 divisors (see below), whose sum is σ = 36863176176. Its totient is φ = 36140368600.

The previous prime is 36501772369. The next prime is 36501772397. The reversal of 36501772387 is 78327710563.

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

It is a cyclic number.

It is not a de Polignac number, because 36501772387 - 2²³ = 36493383779 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 36501772387.

It is not an unprimeable number, because it can be changed into a prime (36501772327) 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, 180701743 + ... + 180701944.

It is an arithmetic number, because the mean of its divisors is an integer number (9215794044).

Almost surely, 2^36501772387 is an apocalyptic number.

36501772387 is a deficient number, since it is larger than the sum of its proper divisors (361403789).

36501772387 is a wasteful number, since it uses less digits than its factorization.

36501772387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361403788.

The product of its (nonzero) digits is 1481760, while the sum is 49.

The spelling of 36501772387 in words is "thirty-six billion, five hundred one million, seven hundred seventy-two thousand, three hundred eighty-seven".