11797979205 has 16 divisors (see below), whose sum is σ = 18880023744. Its totient is φ = 6291169920.

The previous prime is 11797979203. The next prime is 11797979213. The reversal of 11797979205 is 50297979711.

It is not a de Polignac number, because 11797979205 - 2¹ = 11797979203 is a prime.

It is a super-2 number, since 2×11797979205² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11797979203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26185 + ... + 155825.

It is an arithmetic number, because the mean of its divisors is an integer number (1180001484).

Almost surely, 2^11797979205 is an apocalyptic number.

11797979205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11797979205 is a deficient number, since it is larger than the sum of its proper divisors (7082044539).

11797979205 is a wasteful number, since it uses less digits than its factorization.

11797979205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135716.

The product of its (nonzero) digits is 2500470, while the sum is 57.

The spelling of 11797979205 in words is "eleven billion, seven hundred ninety-seven million, nine hundred seventy-nine thousand, two hundred five".