123416444457 has 6 divisors (see below), whose sum is σ = 178268197562. Its totient is φ = 82277629632.

The previous prime is 123416444443. The next prime is 123416444477. The reversal of 123416444457 is 754444614321.

123416444457 is a `hidden beast` number, since 1 + 2 + 34 + 164 + 4 + 4 + 457 = 666.

It can be written as a sum of positive squares in only one way, i.e., 119474613801 + 3941830656 = 345651^2 + 62784^2 .

It is not a de Polignac number, because 123416444457 - 2¹⁰ = 123416443433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123416444407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6856469128 + ... + 6856469145.

Almost surely, 2^123416444457 is an apocalyptic number.

It is an amenable number.

123416444457 is a deficient number, since it is larger than the sum of its proper divisors (54851753105).

123416444457 is a wasteful number, since it uses less digits than its factorization.

123416444457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13712938279 (or 13712938276 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 45.

The spelling of 123416444457 in words is "one hundred twenty-three billion, four hundred sixteen million, four hundred forty-four thousand, four hundred fifty-seven".