681100940365 has 16 divisors (see below), whose sum is σ = 831287021760. Its totient is φ = 535572668160.

The previous prime is 681100940357. The next prime is 681100940369. The reversal of 681100940365 is 563049001186.

681100940365 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 681100940365 - 2³ = 681100940357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681100940369) 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, 2070250 + ... + 2376580.

It is an arithmetic number, because the mean of its divisors is an integer number (51955438860).

Almost surely, 2^681100940365 is an apocalyptic number.

It is an amenable number.

681100940365 is a deficient number, since it is larger than the sum of its proper divisors (150186081395).

681100940365 is a wasteful number, since it uses less digits than its factorization.

681100940365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313932.

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 681100940365 in words is "six hundred eighty-one billion, one hundred million, nine hundred forty thousand, three hundred sixty-five".