123400786694 has 8 divisors (see below), whose sum is σ = 185138267160. Its totient is φ = 61688030976.

The previous prime is 123400786661. The next prime is 123400786697. The reversal of 123400786694 is 496687004321.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123400786697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6168704 + ... + 6188675.

It is an arithmetic number, because the mean of its divisors is an integer number (23142283395).

Almost surely, 2^123400786694 is an apocalyptic number.

123400786694 is a deficient number, since it is larger than the sum of its proper divisors (61737480466).

123400786694 is a wasteful number, since it uses less digits than its factorization.

123400786694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12362374.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 123400786694 in words is "one hundred twenty-three billion, four hundred million, seven hundred eighty-six thousand, six hundred ninety-four".