55121119271377 has 2 divisors, whose sum is σ = 55121119271378. Its totient is φ = 55121119271376.

The previous prime is 55121119271311. The next prime is 55121119271399. The reversal of 55121119271377 is 77317291112155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32645327804881 + 22475791466496 = 5713609^2 + 4740864^2 .

It is a cyclic number.

It is not a de Polignac number, because 55121119271377 - 2²⁷ = 55120985053649 is a prime.

It is a super-2 number, since 2×55121119271377² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55121119271177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27560559635688 + 27560559635689.

It is an arithmetic number, because the mean of its divisors is an integer number (27560559635689).

Almost surely, 2^{55121119271377} is an apocalyptic number.

It is an amenable number.

55121119271377 is a deficient number, since it is larger than the sum of its proper divisors (1).

55121119271377 is an equidigital number, since it uses as much as digits as its factorization.

55121119271377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 926100, while the sum is 52.

The spelling of 55121119271377 in words is "fifty-five trillion, one hundred twenty-one billion, one hundred nineteen million, two hundred seventy-one thousand, three hundred seventy-seven".