123664115662 has 4 divisors (see below), whose sum is σ = 185496173496. Its totient is φ = 61832057830.

The previous prime is 123664115633. The next prime is 123664115717. The reversal of 123664115662 is 266511466321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 266511466321 = 227 ⋅1174059323.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30916028914 + ... + 30916028917.

It is an arithmetic number, because the mean of its divisors is an integer number (46374043374).

Almost surely, 2^123664115662 is an apocalyptic number.

123664115662 is a deficient number, since it is larger than the sum of its proper divisors (61832057834).

123664115662 is an equidigital number, since it uses as much as digits as its factorization.

123664115662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61832057833.

The product of its digits is 311040, while the sum is 43.

The spelling of 123664115662 in words is "one hundred twenty-three billion, six hundred sixty-four million, one hundred fifteen thousand, six hundred sixty-two".