681453146309631 has 64 divisors (see below), whose sum is σ = 936293369356800. Its totient is φ = 440543236492800.

The previous prime is 681453146309623. The next prime is 681453146309659. The reversal of 681453146309631 is 136903641354186.

It is not a de Polignac number, because 681453146309631 - 2³ = 681453146309623 is a prime.

It is a super-2 number, since 2×681453146309631² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681453146304631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 112767355296 + ... + 112767361338.

It is an arithmetic number, because the mean of its divisors is an integer number (14629583896200).

Almost surely, 2^{681453146309631} is an apocalyptic number.

681453146309631 is a deficient number, since it is larger than the sum of its proper divisors (254840223047169).

681453146309631 is a wasteful number, since it uses less digits than its factorization.

681453146309631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9336.

The product of its (nonzero) digits is 33592320, while the sum is 60.

The spelling of 681453146309631 in words is "six hundred eighty-one trillion, four hundred fifty-three billion, one hundred forty-six million, three hundred nine thousand, six hundred thirty-one".