744638142247 has 8 divisors (see below), whose sum is σ = 748656368640. Its totient is φ = 740621162040.

The previous prime is 744638142181. The next prime is 744638142301. The reversal of 744638142247 is 742241836447.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 744638142247 - 2²⁷ = 744503924519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 744638142194 and 744638142203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744638142847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 899404 + ... + 1515982.

It is an arithmetic number, because the mean of its divisors is an integer number (93582046080).

Almost surely, 2^744638142247 is an apocalyptic number.

744638142247 is a deficient number, since it is larger than the sum of its proper divisors (4018226393).

744638142247 is a wasteful number, since it uses less digits than its factorization.

744638142247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623093.

The product of its digits is 7225344, while the sum is 52.

The spelling of 744638142247 in words is "seven hundred forty-four billion, six hundred thirty-eight million, one hundred forty-two thousand, two hundred forty-seven".