6491857894692 has 24 divisors (see below), whose sum is σ = 15148012311936. Its totient is φ = 2163903504288.

The previous prime is 6491857894603. The next prime is 6491857894703. The reversal of 6491857894692 is 2964987581946.

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, 5588323 + ... + 6649290.

It is an arithmetic number, because the mean of its divisors is an integer number (631167179664).

Almost surely, 2^{6491857894692} is an apocalyptic number.

It is an amenable number.

6491857894692 is an abundant number, since it is smaller than the sum of its proper divisors (8656154417244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6491857894692 is a wasteful number, since it uses less digits than its factorization.

6491857894692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12281827 (or 12281825 counting only the distinct ones).

The product of its digits is 1881169920, while the sum is 78.

The spelling of 6491857894692 in words is "six trillion, four hundred ninety-one billion, eight hundred fifty-seven million, eight hundred ninety-four thousand, six hundred ninety-two".