123258478693 has 24 divisors (see below), whose sum is σ = 151014756672. Its totient is φ = 100112088384.

The previous prime is 123258478691. The next prime is 123258478697. The reversal of 123258478693 is 396874852321.

It is a happy number.

It is not a de Polignac number, because 123258478693 - 2¹ = 123258478691 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 (123258478691) 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 23 ways as a sum of consecutive naturals, for example, 390480 + ... + 631657.

It is an arithmetic number, because the mean of its divisors is an integer number (6292281528).

Almost surely, 2^123258478693 is an apocalyptic number.

It is an amenable number.

123258478693 is a deficient number, since it is larger than the sum of its proper divisors (27756277979).

123258478693 is a wasteful number, since it uses less digits than its factorization.

123258478693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022281 (or 1022274 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 58.

The spelling of 123258478693 in words is "one hundred twenty-three billion, two hundred fifty-eight million, four hundred seventy-eight thousand, six hundred ninety-three".