742253172663 has 4 divisors (see below), whose sum is σ = 989670896888. Its totient is φ = 494835448440.

The previous prime is 742253172589. The next prime is 742253172667. The reversal of 742253172663 is 366271352247.

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

It is not a de Polignac number, because 742253172663 - 2⁸ = 742253172407 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 (742253172667) 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, 123708862108 + ... + 123708862113.

It is an arithmetic number, because the mean of its divisors is an integer number (247417724222).

Almost surely, 2^742253172663 is an apocalyptic number.

742253172663 is a deficient number, since it is larger than the sum of its proper divisors (247417724225).

742253172663 is a wasteful number, since it uses less digits than its factorization.

742253172663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247417724224.

The product of its digits is 2540160, while the sum is 48.

The spelling of 742253172663 in words is "seven hundred forty-two billion, two hundred fifty-three million, one hundred seventy-two thousand, six hundred sixty-three".