36556621434 has 20 divisors (see below), whose sum is σ = 81913911354. Its totient is φ = 12185540424.

The previous prime is 36556621417. The next prime is 36556621459. The reversal of 36556621434 is 43412665563.

36556621434 is a `hidden beast` number, since 3 + 6 + 556 + 62 + 1 + 4 + 34 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20691959409 + 15864662025 = 143847^2 + 125955^2 .

It is a super-3 number, since 3×36556621434³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 36556621434.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 112828917 + ... + 112829240.

Almost surely, 2^36556621434 is an apocalyptic number.

36556621434 is an abundant number, since it is smaller than the sum of its proper divisors (45357289920).

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

36556621434 is a wasteful number, since it uses less digits than its factorization.

36556621434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225658171 (or 225658162 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 45.

The spelling of 36556621434 in words is "thirty-six billion, five hundred fifty-six million, six hundred twenty-one thousand, four hundred thirty-four".