36781386940 has 48 divisors (see below), whose sum is σ = 77896756224. Its totient is φ = 14587776000.

The previous prime is 36781386931. The next prime is 36781386989. The reversal of 36781386940 is 4968318763.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5485590 + ... + 5492290.

It is an arithmetic number, because the mean of its divisors is an integer number (1622849088).

Almost surely, 2^36781386940 is an apocalyptic number.

It is an amenable number.

36781386940 is an abundant number, since it is smaller than the sum of its proper divisors (41115369284).

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

36781386940 is a wasteful number, since it uses less digits than its factorization.

36781386940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8998 (or 8996 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 36781386940 in words is "thirty-six billion, seven hundred eighty-one million, three hundred eighty-six thousand, nine hundred forty".