36909681840 has 120 divisors (see below), whose sum is σ = 125653207680. Its totient is φ = 9707738112.

The previous prime is 36909681803. The next prime is 36909681841. The reversal of 36909681840 is 4818690963.

36909681840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×36909681840² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (36909681841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 298560 + ... + 403679.

It is an arithmetic number, because the mean of its divisors is an integer number (1047110064).

Almost surely, 2^36909681840 is an apocalyptic number.

36909681840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

36909681840 is an abundant number, since it is smaller than the sum of its proper divisors (88743525840).

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

36909681840 is a wasteful number, since it uses less digits than its factorization.

36909681840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702331 (or 702322 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 36909681840 in words is "thirty-six billion, nine hundred nine million, six hundred eighty-one thousand, eight hundred forty".