6781612518494 has 16 divisors (see below), whose sum is σ = 11097233663616. Its totient is φ = 3082537383000.

The previous prime is 6781612518469. The next prime is 6781612518589. The reversal of 6781612518494 is 4948152161876.

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, 5648519 + ... + 6743069.

It is an arithmetic number, because the mean of its divisors is an integer number (693577103976).

Almost surely, 2^{6781612518494} is an apocalyptic number.

6781612518494 is a deficient number, since it is larger than the sum of its proper divisors (4315621145122).

6781612518494 is a wasteful number, since it uses less digits than its factorization.

6781612518494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376191.

The product of its digits is 23224320, while the sum is 62.

The spelling of 6781612518494 in words is "six trillion, seven hundred eighty-one billion, six hundred twelve million, five hundred eighteen thousand, four hundred ninety-four".