6691367814542 has 16 divisors (see below), whose sum is σ = 10095853770000. Its totient is φ = 3326093332800.

The previous prime is 6691367814533. The next prime is 6691367814559. The reversal of 6691367814542 is 2454187631966.

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, 1200167 + ... + 3850082.

It is an arithmetic number, because the mean of its divisors is an integer number (630990860625).

Almost surely, 2^{6691367814542} is an apocalyptic number.

6691367814542 is a deficient number, since it is larger than the sum of its proper divisors (3404485955458).

6691367814542 is a wasteful number, since it uses less digits than its factorization.

6691367814542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5054131.

The product of its digits is 52254720, while the sum is 62.

The spelling of 6691367814542 in words is "six trillion, six hundred ninety-one billion, three hundred sixty-seven million, eight hundred fourteen thousand, five hundred forty-two".