123247091399238 has 24 divisors (see below), whose sum is σ = 276243480723600. Its totient is φ = 39665730565104.

The previous prime is 123247091399203. The next prime is 123247091399363. The reversal of 123247091399238 is 832993190742321.

123247091399238 is a `hidden beast` number, since 1 + 2 + 3 + 2 + 4 + 7 + 0 + 9 + 1 + 399 + 238 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118052769018 + ... + 118052770061.

It is an arithmetic number, because the mean of its divisors is an integer number (11510145030150).

Almost surely, 2^{123247091399238} is an apocalyptic number.

123247091399238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

123247091399238 is an abundant number, since it is smaller than the sum of its proper divisors (152996389324362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123247091399238 is a wasteful number, since it uses less digits than its factorization.

123247091399238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236105539116 (or 236105539113 counting only the distinct ones).

The product of its (nonzero) digits is 35271936, while the sum is 63.

The spelling of 123247091399238 in words is "one hundred twenty-three trillion, two hundred forty-seven billion, ninety-one million, three hundred ninety-nine thousand, two hundred thirty-eight".