68457350381 has 24 divisors (see below), whose sum is σ = 82054053120. Its totient is φ = 55936835136.

The previous prime is 68457350369. The next prime is 68457350387. The reversal of 68457350381 is 18305375486.

68457350381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 68457350381 - 2³⁴ = 51277481197 is a prime.

It is a super-2 number, since 2×68457350381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68457350387) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 391475 + ... + 538671.

It is an arithmetic number, because the mean of its divisors is an integer number (3418918880).

Almost surely, 2^68457350381 is an apocalyptic number.

It is an amenable number.

68457350381 is a deficient number, since it is larger than the sum of its proper divisors (13596702739).

68457350381 is a wasteful number, since it uses less digits than its factorization.

68457350381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147341 (or 147312 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 50.

The spelling of 68457350381 in words is "sixty-eight billion, four hundred fifty-seven million, three hundred fifty thousand, three hundred eighty-one".