36561274560 has 196 divisors, whose sum is σ = 130533422448. Its totient is φ = 9749611008.

The previous prime is 36561274549. The next prime is 36561274579. The reversal of 36561274560 is 6547216563.

36561274560 is a `hidden beast` number, since 3 + 6 + 5 + 6 + 12 + 74 + 560 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 154917 + ... + 311643.

Almost surely, 2^36561274560 is an apocalyptic number.

36561274560 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 36561274560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65266711224).

36561274560 is an abundant number, since it is smaller than the sum of its proper divisors (93972147888).

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

36561274560 is an equidigital number, since it uses as much as digits as its factorization.

36561274560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156762 (or 156737 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 36561274560 in words is "thirty-six billion, five hundred sixty-one million, two hundred seventy-four thousand, five hundred sixty".