36641558520 has 640 divisors, whose sum is σ = 154641484800. Its totient is φ = 7587385344.

The previous prime is 36641558489. The next prime is 36641558531. The reversal of 36641558520 is 2585514663.

36641558520 is a `hidden beast` number, since 3 + 6 + 6 + 41 + 5 + 585 + 20 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 9909312 + ... + 9913008.

It is an arithmetic number, because the mean of its divisors is an integer number (241627320).

Almost surely, 2^36641558520 is an apocalyptic number.

36641558520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36641558520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77320742400).

36641558520 is an abundant number, since it is smaller than the sum of its proper divisors (117999926280).

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

36641558520 is a wasteful number, since it uses less digits than its factorization.

36641558520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3769 (or 3756 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

The spelling of 36641558520 in words is "thirty-six billion, six hundred forty-one million, five hundred fifty-eight thousand, five hundred twenty".