36501718881 has 32 divisors (see below), whose sum is σ = 52366279680. Its totient is φ = 22545432000.

The previous prime is 36501718879. The next prime is 36501718943. The reversal of 36501718881 is 18881710563.

36501718881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 36501718881 - 2¹ = 36501718879 is a prime.

It is a super-2 number, since 2×36501718881² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 36501718881.

It is not an unprimeable number, because it can be changed into a prime (36501718801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 920106 + ... + 958956.

It is an arithmetic number, because the mean of its divisors is an integer number (1636446240).

Almost surely, 2^36501718881 is an apocalyptic number.

It is an amenable number.

36501718881 is a deficient number, since it is larger than the sum of its proper divisors (15864560799).

36501718881 is a wasteful number, since it uses less digits than its factorization.

36501718881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39237.

The product of its (nonzero) digits is 322560, while the sum is 48.

The spelling of 36501718881 in words is "thirty-six billion, five hundred one million, seven hundred eighteen thousand, eight hundred eighty-one".