123435055266377 has 2 divisors, whose sum is σ = 123435055266378. Its totient is φ = 123435055266376.

The previous prime is 123435055266361. The next prime is 123435055266421. The reversal of 123435055266377 is 773662550534321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123427300526656 + 7754739721 = 11109784^2 + 88061^2 .

It is a cyclic number.

It is not a de Polignac number, because 123435055266377 - 2⁴ = 123435055266361 is a prime.

It is a super-3 number, since 3×123435055266377³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (123435055266277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61717527633188 + 61717527633189.

It is an arithmetic number, because the mean of its divisors is an integer number (61717527633189).

Almost surely, 2^{123435055266377} is an apocalyptic number.

It is an amenable number.

123435055266377 is a deficient number, since it is larger than the sum of its proper divisors (1).

123435055266377 is an equidigital number, since it uses as much as digits as its factorization.

123435055266377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256000, while the sum is 59.

The spelling of 123435055266377 in words is "one hundred twenty-three trillion, four hundred thirty-five billion, fifty-five million, two hundred sixty-six thousand, three hundred seventy-seven".