123775746415 has 4 divisors (see below), whose sum is σ = 148530895704. Its totient is φ = 99020597128.

The previous prime is 123775746383. The next prime is 123775746421. The reversal of 123775746415 is 514647577321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 514647577321 = 271 ⋅1899068551.

It is a cyclic number.

It is not a de Polignac number, because 123775746415 - 2⁵ = 123775746383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12377574637 + ... + 12377574646.

It is an arithmetic number, because the mean of its divisors is an integer number (37132723926).

Almost surely, 2^123775746415 is an apocalyptic number.

123775746415 is a deficient number, since it is larger than the sum of its proper divisors (24755149289).

123775746415 is an equidigital number, since it uses as much as digits as its factorization.

123775746415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24755149288.

The product of its digits is 4939200, while the sum is 52.

The spelling of 123775746415 in words is "one hundred twenty-three billion, seven hundred seventy-five million, seven hundred forty-six thousand, four hundred fifteen".