744862989671 has 4 divisors (see below), whose sum is σ = 777248337072. Its totient is φ = 712477642272.

The previous prime is 744862989667. The next prime is 744862989679. The reversal of 744862989671 is 176989268447.

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 744862989671 - 2² = 744862989667 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 744862989595 and 744862989604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744862989679) 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, 16192673666 + ... + 16192673711.

It is an arithmetic number, because the mean of its divisors is an integer number (194312084268).

Almost surely, 2^744862989671 is an apocalyptic number.

744862989671 is a deficient number, since it is larger than the sum of its proper divisors (32385347401).

744862989671 is a wasteful number, since it uses less digits than its factorization.

744862989671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32385347400.

The product of its digits is 292626432, while the sum is 71.

The spelling of 744862989671 in words is "seven hundred forty-four billion, eight hundred sixty-two million, nine hundred eighty-nine thousand, six hundred seventy-one".