123606215667 has 24 divisors (see below), whose sum is σ = 194784602688. Its totient is φ = 74908561200.

The previous prime is 123606215657. The next prime is 123606215669. The reversal of 123606215667 is 766512606321.

123606215667 is a `hidden beast` number, since 1 + 2 + 3 + 60 + 6 + 21 + 566 + 7 = 666.

It is not a de Polignac number, because 123606215667 - 2⁷ = 123606215539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123606215669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2950288 + ... + 2991890.

It is an arithmetic number, because the mean of its divisors is an integer number (8116025112).

Almost surely, 2^123606215667 is an apocalyptic number.

123606215667 is a deficient number, since it is larger than the sum of its proper divisors (71178387021).

123606215667 is a wasteful number, since it uses less digits than its factorization.

123606215667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71631 (or 71628 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 123606215667 in words is "one hundred twenty-three billion, six hundred six million, two hundred fifteen thousand, six hundred sixty-seven".