2155422017377 has 2 divisors, whose sum is σ = 2155422017378. Its totient is φ = 2155422017376.

The previous prime is 2155422017369. The next prime is 2155422017401. The reversal of 2155422017377 is 7737102245512.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1993628217681 + 161793799696 = 1411959^2 + 402236^2 .

It is a cyclic number.

It is not a de Polignac number, because 2155422017377 - 2³ = 2155422017369 is a prime.

It is not a weakly prime, because it can be changed into another prime (2155422012377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077711008688 + 1077711008689.

It is an arithmetic number, because the mean of its divisors is an integer number (1077711008689).

Almost surely, 2^{2155422017377} is an apocalyptic number.

It is an amenable number.

2155422017377 is a deficient number, since it is larger than the sum of its proper divisors (1).

2155422017377 is an equidigital number, since it uses as much as digits as its factorization.

2155422017377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 823200, while the sum is 46.

The spelling of 2155422017377 in words is "two trillion, one hundred fifty-five billion, four hundred twenty-two million, seventeen thousand, three hundred seventy-seven".