36561213645 has 64 divisors (see below), whose sum is σ = 66069561600. Its totient is φ = 17101629440.

The previous prime is 36561213631. The next prime is 36561213653. The reversal of 36561213645 is 54631216563.

36561213645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 36561213645 - 2⁴ = 36561213629 is a prime.

It is a super-3 number, since 3×36561213645³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 36561213597 and 36561213606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8290201 + ... + 8294609.

It is an arithmetic number, because the mean of its divisors is an integer number (1032336900).

Almost surely, 2^36561213645 is an apocalyptic number.

It is an amenable number.

36561213645 is a deficient number, since it is larger than the sum of its proper divisors (29508347955).

36561213645 is a wasteful number, since it uses less digits than its factorization.

36561213645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6190.

The product of its digits is 388800, while the sum is 42.

The spelling of 36561213645 in words is "thirty-six billion, five hundred sixty-one million, two hundred thirteen thousand, six hundred forty-five".