36155271621 has 32 divisors (see below), whose sum is σ = 55289806848. Its totient is φ = 20586744000.

The previous prime is 36155271619. The next prime is 36155271667. The reversal of 36155271621 is 12617255163.

It is not a de Polignac number, because 36155271621 - 2¹ = 36155271619 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 36155271621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36155271671) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16060746 + ... + 16062996.

It is an arithmetic number, because the mean of its divisors is an integer number (1727806464).

Almost surely, 2^36155271621 is an apocalyptic number.

It is an amenable number.

36155271621 is a deficient number, since it is larger than the sum of its proper divisors (19134535227).

36155271621 is a wasteful number, since it uses less digits than its factorization.

36155271621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4641.

The product of its digits is 75600, while the sum is 39.

The spelling of 36155271621 in words is "thirty-six billion, one hundred fifty-five million, two hundred seventy-one thousand, six hundred twenty-one".