36681741978 has 64 divisors (see below), whose sum is σ = 84580761600. Its totient is φ = 10388552832.

The previous prime is 36681741961. The next prime is 36681741989. The reversal of 36681741978 is 87914718663.

36681741978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7641223 + ... + 7646021.

It is an arithmetic number, because the mean of its divisors is an integer number (1321574400).

Almost surely, 2^36681741978 is an apocalyptic number.

36681741978 is an abundant number, since it is smaller than the sum of its proper divisors (47899019622).

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

36681741978 is a wasteful number, since it uses less digits than its factorization.

36681741978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6371.

The product of its digits is 12192768, while the sum is 60.

It can be divided in two parts, 3668 and 1741978, that added together give a triangular number (1745646 = T₁₈₆₈).

The spelling of 36681741978 in words is "thirty-six billion, six hundred eighty-one million, seven hundred forty-one thousand, nine hundred seventy-eight".