681481401474 has 16 divisors (see below), whose sum is σ = 1362976283808. Its totient is φ = 227158220352.

The previous prime is 681481401443. The next prime is 681481401479. The reversal of 681481401474 is 474104184186.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (681481401479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168489 + ... + 1179555.

It is an arithmetic number, because the mean of its divisors is an integer number (85186017738).

Almost surely, 2^681481401474 is an apocalyptic number.

681481401474 is an abundant number, since it is smaller than the sum of its proper divisors (681494882334).

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

681481401474 is a wasteful number, since it uses less digits than its factorization.

681481401474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123409.

The product of its (nonzero) digits is 688128, while the sum is 48.

The spelling of 681481401474 in words is "six hundred eighty-one billion, four hundred eighty-one million, four hundred one thousand, four hundred seventy-four".