681475742514 has 48 divisors (see below), whose sum is σ = 1694897575488. Its totient is φ = 193849605216.

The previous prime is 681475742509. The next prime is 681475742527. The reversal of 681475742514 is 415247574186.

It is a happy number.

681475742514 is a `hidden beast` number, since 6 + 8 + 1 + 47 + 574 + 25 + 1 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11884477 + ... + 11941680.

It is an arithmetic number, because the mean of its divisors is an integer number (35310366156).

Almost surely, 2^681475742514 is an apocalyptic number.

681475742514 is an abundant number, since it is smaller than the sum of its proper divisors (1013421832974).

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

681475742514 is a wasteful number, since it uses less digits than its factorization.

681475742514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23826399 (or 23826396 counting only the distinct ones).

The product of its digits is 7526400, while the sum is 54.

The spelling of 681475742514 in words is "six hundred eighty-one billion, four hundred seventy-five million, seven hundred forty-two thousand, five hundred fourteen".