1371661680685 has 8 divisors (see below), whose sum is σ = 1647668482560. Its totient is φ = 1096213034064.

The previous prime is 1371661680677. The next prime is 1371661680737. The reversal of 1371661680685 is 5860861661731.

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

It is a cyclic number.

It is not a de Polignac number, because 1371661680685 - 2³ = 1371661680677 is a prime.

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, 139533405 + ... + 139543234.

It is an arithmetic number, because the mean of its divisors is an integer number (205958560320).

Almost surely, 2^{1371661680685} is an apocalyptic number.

It is an amenable number.

1371661680685 is a deficient number, since it is larger than the sum of its proper divisors (276006801875).

1371661680685 is an equidigital number, since it uses as much as digits as its factorization.

1371661680685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279077627.

The product of its (nonzero) digits is 8709120, while the sum is 58.

The spelling of 1371661680685 in words is "one trillion, three hundred seventy-one billion, six hundred sixty-one million, six hundred eighty thousand, six hundred eighty-five".