123485515679 has 8 divisors (see below), whose sum is σ = 124293489648. Its totient is φ = 122677813440.

The previous prime is 123485515669. The next prime is 123485515717. The reversal of 123485515679 is 976515584321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123485515679 - 2⁸ = 123485515423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123485515669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 887699 + ... + 1017339.

It is an arithmetic number, because the mean of its divisors is an integer number (15536686206).

Almost surely, 2^123485515679 is an apocalyptic number.

123485515679 is a deficient number, since it is larger than the sum of its proper divisors (807973969).

123485515679 is a wasteful number, since it uses less digits than its factorization.

123485515679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135865.

The product of its digits is 9072000, while the sum is 56.

The spelling of 123485515679 in words is "one hundred twenty-three billion, four hundred eighty-five million, five hundred fifteen thousand, six hundred seventy-nine".