13977161855 has 8 divisors (see below), whose sum is σ = 17089058592. Its totient is φ = 10970753248.

The previous prime is 13977161851. The next prime is 13977161873. The reversal of 13977161855 is 55816177931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13977161855 - 2² = 13977161851 is a prime.

It is a super-2 number, since 2×13977161855² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13977161797 and 13977161806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13977161851) 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, 26371739 + ... + 26372268.

It is an arithmetic number, because the mean of its divisors is an integer number (2136132324).

Almost surely, 2^13977161855 is an apocalyptic number.

13977161855 is a deficient number, since it is larger than the sum of its proper divisors (3111896737).

13977161855 is an equidigital number, since it uses as much as digits as its factorization.

13977161855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52744065.

The product of its digits is 1587600, while the sum is 53.

The spelling of 13977161855 in words is "thirteen billion, nine hundred seventy-seven million, one hundred sixty-one thousand, eight hundred fifty-five".