13136195821 has 8 divisors (see below), whose sum is σ = 15319179200. Its totient is φ = 11259596124.

The previous prime is 13136195819. The next prime is 13136195837. The reversal of 13136195821 is 12859163131.

It is not a de Polignac number, because 13136195821 - 2¹ = 13136195819 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 (13136195521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19148631 + ... + 19149316.

It is an arithmetic number, because the mean of its divisors is an integer number (1914897400).

Almost surely, 2^13136195821 is an apocalyptic number.

It is an amenable number.

13136195821 is a deficient number, since it is larger than the sum of its proper divisors (2182983379).

13136195821 is an frugal number, since it uses more digits than its factorization.

13136195821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38297968 (or 38297954 counting only the distinct ones).

The product of its digits is 38880, while the sum is 40.

The spelling of 13136195821 in words is "thirteen billion, one hundred thirty-six million, one hundred ninety-five thousand, eight hundred twenty-one".