36172520540 has 192 divisors, whose sum is σ = 85248710400. Its totient is φ = 12809871360.

The previous prime is 36172520521. The next prime is 36172520543. The reversal of 36172520540 is 4502527163.

It is a self number, because there is not a number n which added to its sum of digits gives 36172520540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36172520543) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 181771361 + ... + 181771559.

It is an arithmetic number, because the mean of its divisors is an integer number (444003700).

Almost surely, 2^36172520540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36172520540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42624355200).

36172520540 is an abundant number, since it is smaller than the sum of its proper divisors (49076189860).

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

36172520540 is a wasteful number, since it uses less digits than its factorization.

36172520540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512 (or 510 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The spelling of 36172520540 in words is "thirty-six billion, one hundred seventy-two million, five hundred twenty thousand, five hundred forty".