36844215840 has 72 divisors (see below), whose sum is σ = 125730891468. Its totient is φ = 9825123840.

The previous prime is 36844215827. The next prime is 36844215853. The reversal of 36844215840 is 4851244863.

36844215840 is a `hidden beast` number, since 3 + 6 + 8 + 44 + 21 + 584 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (36844215827) and next prime (36844215853).

It can be written as a sum of positive squares in 2 ways, for example, as 30238427664 + 6605788176 = 173892^2 + 81276^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12791691 + ... + 12794570.

Almost surely, 2^36844215840 is an apocalyptic number.

36844215840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

36844215840 is an abundant number, since it is smaller than the sum of its proper divisors (88886675628).

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

36844215840 is a wasteful number, since it uses less digits than its factorization.

36844215840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25586282 (or 25586271 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 45.

The spelling of 36844215840 in words is "thirty-six billion, eight hundred forty-four million, two hundred fifteen thousand, eight hundred forty".