123694919377 has 2 divisors, whose sum is σ = 123694919378. Its totient is φ = 123694919376.

The previous prime is 123694919357. The next prime is 123694919399. The reversal of 123694919377 is 773919496321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109878327441 + 13816591936 = 331479^2 + 117544^2 .

It is a cyclic number.

It is not a de Polignac number, because 123694919377 - 2²³ = 123686530769 is a prime.

It is not a weakly prime, because it can be changed into another prime (123694919357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61847459688 + 61847459689.

It is an arithmetic number, because the mean of its divisors is an integer number (61847459689).

Almost surely, 2^123694919377 is an apocalyptic number.

It is an amenable number.

123694919377 is a deficient number, since it is larger than the sum of its proper divisors (1).

123694919377 is an equidigital number, since it uses as much as digits as its factorization.

123694919377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15431472, while the sum is 61.

The spelling of 123694919377 in words is "one hundred twenty-three billion, six hundred ninety-four million, nine hundred nineteen thousand, three hundred seventy-seven".