681450882773245 has 64 divisors (see below), whose sum is σ = 954539707080960. Its totient is φ = 462411418226688.

The previous prime is 681450882773237. The next prime is 681450882773261. The reversal of 681450882773245 is 542377288054186.

It is a cyclic number.

It is not a de Polignac number, because 681450882773245 - 2³ = 681450882773237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 108071787 + ... + 114203383.

It is an arithmetic number, because the mean of its divisors is an integer number (14914682923140).

Almost surely, 2^{681450882773245} is an apocalyptic number.

681450882773245 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

681450882773245 is a deficient number, since it is larger than the sum of its proper divisors (273088824307715).

681450882773245 is a wasteful number, since it uses less digits than its factorization.

681450882773245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6134014.

The product of its (nonzero) digits is 722534400, while the sum is 70.

The spelling of 681450882773245 in words is "six hundred eighty-one trillion, four hundred fifty billion, eight hundred eighty-two million, seven hundred seventy-three thousand, two hundred forty-five".