681474148134 has 32 divisors (see below), whose sum is σ = 1475990449920. Its totient is φ = 208512928032.

The previous prime is 681474148127. The next prime is 681474148139. The reversal of 681474148134 is 431841474186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681474148139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24390642 + ... + 24418565.

It is an arithmetic number, because the mean of its divisors is an integer number (46124701560).

Almost surely, 2^681474148134 is an apocalyptic number.

681474148134 is an abundant number, since it is smaller than the sum of its proper divisors (794516301786).

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

681474148134 is a wasteful number, since it uses less digits than its factorization.

681474148134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48809404.

The product of its digits is 2064384, while the sum is 51.

The spelling of 681474148134 in words is "six hundred eighty-one billion, four hundred seventy-four million, one hundred forty-eight thousand, one hundred thirty-four".