42767726779 has 4 divisors (see below), whose sum is σ = 43370089200. Its totient is φ = 42165364360.

The previous prime is 42767726719. The next prime is 42767726801. The reversal of 42767726779 is 97762776724.

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

It is a cyclic number.

It is not a de Polignac number, because 42767726779 - 2³⁵ = 8407988411 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 42767726779.

It is not an unprimeable number, because it can be changed into a prime (42767726719) 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, 301181104 + ... + 301181245.

It is an arithmetic number, because the mean of its divisors is an integer number (10842522300).

Almost surely, 2^42767726779 is an apocalyptic number.

42767726779 is a deficient number, since it is larger than the sum of its proper divisors (602362421).

42767726779 is an equidigital number, since it uses as much as digits as its factorization.

42767726779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602362420.

The product of its digits is 87127488, while the sum is 64.

The spelling of 42767726779 in words is "forty-two billion, seven hundred sixty-seven million, seven hundred twenty-six thousand, seven hundred seventy-nine".