2155167476377 has 4 divisors (see below), whose sum is σ = 2155180233780. Its totient is φ = 2155154718976.

The previous prime is 2155167476369. The next prime is 2155167476381. The reversal of 2155167476377 is 7736747615512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 771918630921 + 1383248845456 = 878589^2 + 1176116^2 .

It is a cyclic number.

It is not a de Polignac number, because 2155167476377 - 2³ = 2155167476369 is a prime.

It is a super-2 number, since 2×2155167476377² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2155167276377) 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, 6121852 + ... + 6464317.

It is an arithmetic number, because the mean of its divisors is an integer number (538795058445).

Almost surely, 2^{2155167476377} is an apocalyptic number.

It is an amenable number.

2155167476377 is a deficient number, since it is larger than the sum of its proper divisors (12757403).

2155167476377 is a wasteful number, since it uses less digits than its factorization.

2155167476377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12757402.

The product of its digits is 51861600, while the sum is 61.

The spelling of 2155167476377 in words is "two trillion, one hundred fifty-five billion, one hundred sixty-seven million, four hundred seventy-six thousand, three hundred seventy-seven".