123011329977 has 12 divisors (see below), whose sum is σ = 179514817300. Its totient is φ = 81162114048.

The previous prime is 123011329967. The next prime is 123011329993. The reversal of 123011329977 is 779923110321.

123011329977 is a `hidden beast` number, since 1 + 230 + 1 + 1 + 329 + 97 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 41155831161 + 81855498816 = 202869^2 + 286104^2 .

It is not a de Polignac number, because 123011329977 - 2³¹ = 120863846329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123011329907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70452352 + ... + 70454097.

Almost surely, 2^123011329977 is an apocalyptic number.

It is an amenable number.

123011329977 is a deficient number, since it is larger than the sum of its proper divisors (56503487323).

123011329977 is a wasteful number, since it uses less digits than its factorization.

123011329977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140906552 (or 140906549 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The spelling of 123011329977 in words is "one hundred twenty-three billion, eleven million, three hundred twenty-nine thousand, nine hundred seventy-seven".