6767638957047 has 4 divisors (see below), whose sum is σ = 9023518609400. Its totient is φ = 4511759304696.

The previous prime is 6767638957031. The next prime is 6767638957049. The reversal of 6767638957047 is 7407598367676.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6767638957047 - 2⁴ = 6767638957031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6767638957047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6767638957049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1127939826172 + ... + 1127939826177.

It is an arithmetic number, because the mean of its divisors is an integer number (2255879652350).

Almost surely, 2^{6767638957047} is an apocalyptic number.

6767638957047 is a deficient number, since it is larger than the sum of its proper divisors (2255879652353).

6767638957047 is a wasteful number, since it uses less digits than its factorization.

6767638957047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255879652352.

The product of its (nonzero) digits is 2240421120, while the sum is 75.

The spelling of 6767638957047 in words is "six trillion, seven hundred sixty-seven billion, six hundred thirty-eight million, nine hundred fifty-seven thousand, forty-seven".