681212580415 has 8 divisors (see below), whose sum is σ = 832878777888. Its totient is φ = 534687610080.

The previous prime is 681212580407. The next prime is 681212580427. The reversal of 681212580415 is 514085212186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 681212580415 - 2³ = 681212580407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1285306491 + ... + 1285307020.

It is an arithmetic number, because the mean of its divisors is an integer number (104109847236).

Almost surely, 2^681212580415 is an apocalyptic number.

681212580415 is a deficient number, since it is larger than the sum of its proper divisors (151666197473).

681212580415 is a wasteful number, since it uses less digits than its factorization.

681212580415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570613569.

The product of its (nonzero) digits is 153600, while the sum is 43.

The spelling of 681212580415 in words is "six hundred eighty-one billion, two hundred twelve million, five hundred eighty thousand, four hundred fifteen".