36185907621 has 4 divisors (see below), whose sum is σ = 48247876832. Its totient is φ = 24123938412.

The previous prime is 36185907619. The next prime is 36185907649. The reversal of 36185907621 is 12670958163.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 36185907621 - 2¹ = 36185907619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36185907221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6030984601 + ... + 6030984606.

It is an arithmetic number, because the mean of its divisors is an integer number (12061969208).

Almost surely, 2^36185907621 is an apocalyptic number.

It is an amenable number.

36185907621 is a deficient number, since it is larger than the sum of its proper divisors (12061969211).

36185907621 is a wasteful number, since it uses less digits than its factorization.

36185907621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12061969210.

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 36185907621 in words is "thirty-six billion, one hundred eighty-five million, nine hundred seven thousand, six hundred twenty-one".