36525806640 has 120 divisors (see below), whose sum is σ = 122990409360. Its totient is φ = 9714442752.

The previous prime is 36525806623. The next prime is 36525806641. The reversal of 36525806640 is 4660852563.

36525806640 is a `hidden beast` number, since 3 + 6 + 5 + 2 + 580 + 6 + 64 + 0 = 666.

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

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 (36525806641) 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, 205954 + ... + 339806.

It is an arithmetic number, because the mean of its divisors is an integer number (1024920078).

Almost surely, 2^36525806640 is an apocalyptic number.

36525806640 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 36525806640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61495204680).

36525806640 is an abundant number, since it is smaller than the sum of its proper divisors (86464602720).

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

36525806640 is a wasteful number, since it uses less digits than its factorization.

36525806640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134251 (or 134242 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 36525806640 in words is "thirty-six billion, five hundred twenty-five million, eight hundred six thousand, six hundred forty".