681909070909182 has 32 divisors (see below), whose sum is σ = 1421480355809280. Its totient is φ = 217835030475360.

The previous prime is 681909070909181. The next prime is 681909070909207. The reversal of 681909070909182 is 281909070909186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681909070909181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17796960457 + ... + 17796998772.

It is an arithmetic number, because the mean of its divisors is an integer number (44421261119040).

Almost surely, 2^{681909070909182} is an apocalyptic number.

681909070909182 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

681909070909182 is an abundant number, since it is smaller than the sum of its proper divisors (739571284900098).

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

681909070909182 is a wasteful number, since it uses less digits than its factorization.

681909070909182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35593959368.

The product of its (nonzero) digits is 35271936, while the sum is 69.

The spelling of 681909070909182 in words is "six hundred eighty-one trillion, nine hundred nine billion, seventy million, nine hundred nine thousand, one hundred eighty-two".