6766194082438 has 64 divisors (see below), whose sum is σ = 12422488053888. Its totient is φ = 2698054778880.

The previous prime is 6766194082433. The next prime is 6766194082477. The reversal of 6766194082438 is 8342804916676.

It is a super-2 number, since 2×6766194082438² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6766194082438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6766194082433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7427520 + ... + 8288572.

It is an arithmetic number, because the mean of its divisors is an integer number (194101375842).

Almost surely, 2^{6766194082438} is an apocalyptic number.

6766194082438 is a deficient number, since it is larger than the sum of its proper divisors (5656293971450).

6766194082438 is a wasteful number, since it uses less digits than its factorization.

6766194082438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861457.

The product of its (nonzero) digits is 83607552, while the sum is 64.

The spelling of 6766194082438 in words is "six trillion, seven hundred sixty-six billion, one hundred ninety-four million, eighty-two thousand, four hundred thirty-eight".