123774943477 has 2 divisors, whose sum is σ = 123774943478. Its totient is φ = 123774943476.

The previous prime is 123774943429. The next prime is 123774943553. The reversal of 123774943477 is 774349477321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119775519396 + 3999424081 = 346086^2 + 63241^2 .

It is a cyclic number.

It is not a de Polignac number, because 123774943477 - 2³¹ = 121627459829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123774943177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61887471738 + 61887471739.

It is an arithmetic number, because the mean of its divisors is an integer number (61887471739).

Almost surely, 2^123774943477 is an apocalyptic number.

It is an amenable number.

123774943477 is a deficient number, since it is larger than the sum of its proper divisors (1).

123774943477 is an equidigital number, since it uses as much as digits as its factorization.

123774943477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24893568, while the sum is 58.

The spelling of 123774943477 in words is "one hundred twenty-three billion, seven hundred seventy-four million, nine hundred forty-three thousand, four hundred seventy-seven".