36501389640 has 96 divisors (see below), whose sum is σ = 123023234880. Its totient is φ = 9733701312.

The previous prime is 36501389633. The next prime is 36501389647. The reversal of 36501389640 is 4698310563.

36501389640 is a `hidden beast` number, since 3 + 6 + 501 + 3 + 89 + 64 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (36501389633) and next prime (36501389647).

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

It is not an unprimeable number, because it can be changed into a prime (36501389647) 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, 1867924 + ... + 1887363.

It is an arithmetic number, because the mean of its divisors is an integer number (1281492030).

Almost surely, 2^36501389640 is an apocalyptic number.

36501389640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

36501389640 is an abundant number, since it is smaller than the sum of its proper divisors (86521845240).

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

36501389640 is a wasteful number, since it uses less digits than its factorization.

36501389640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3755313 (or 3755297 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 36501389640 in words is "thirty-six billion, five hundred one million, three hundred eighty-nine thousand, six hundred forty".