742778877247 has 12 divisors (see below), whose sum is σ = 816467456448. Its totient is φ = 675233213600.

The previous prime is 742778877187. The next prime is 742778877263.

742778877247 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 742778877247 - 2³⁵ = 708419138879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742778877287) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5191347 + ... + 5332507.

It is an arithmetic number, because the mean of its divisors is an integer number (68038954704).

Almost surely, 2^742778877247 is an apocalyptic number.

742778877247 is a deficient number, since it is larger than the sum of its proper divisors (73688579201).

742778877247 is a wasteful number, since it uses less digits than its factorization.

742778877247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184670 (or 184659 counting only the distinct ones).

The product of its digits is 481890304, while the sum is 70.

The spelling of 742778877247 in words is "seven hundred forty-two billion, seven hundred seventy-eight million, eight hundred seventy-seven thousand, two hundred forty-seven".