230621694138 has 72 divisors (see below), whose sum is σ = 575305769376. Its totient is φ = 66207164400.

The previous prime is 230621694113. The next prime is 230621694139. The reversal of 230621694138 is 831496126032.

230621694138 is a `hidden beast` number, since 2 + 3 + 0 + 621 + 6 + 9 + 4 + 13 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 230621694093 and 230621694102.

It is not an unprimeable number, because it can be changed into a prime (230621694139) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1541758 + ... + 1684713.

It is an arithmetic number, because the mean of its divisors is an integer number (7990357908).

Almost surely, 2^230621694138 is an apocalyptic number.

230621694138 is an abundant number, since it is smaller than the sum of its proper divisors (344684075238).

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

230621694138 is a wasteful number, since it uses less digits than its factorization.

230621694138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3226528 (or 3226506 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 230621694138 in words is "two hundred thirty billion, six hundred twenty-one million, six hundred ninety-four thousand, one hundred thirty-eight".