744529387478268 has 48 divisors (see below), whose sum is σ = 2049457238657024. Its totient is φ = 205860660131520.

The previous prime is 744529387478263. The next prime is 744529387478269. The reversal of 744529387478268 is 862874783925447.

It is a Harshad number since it is a multiple of its sum of digits (84).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744529387478263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142958789155 + ... + 142958794362.

Almost surely, 2^{744529387478268} is an apocalyptic number.

It is an amenable number.

744529387478268 is an abundant number, since it is smaller than the sum of its proper divisors (1304927851178756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

744529387478268 is a wasteful number, since it uses less digits than its factorization.

744529387478268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285917583562 (or 285917583560 counting only the distinct ones).

The product of its digits is 36415733760, while the sum is 84.

The spelling of 744529387478268 in words is "seven hundred forty-four trillion, five hundred twenty-nine billion, three hundred eighty-seven million, four hundred seventy-eight thousand, two hundred sixty-eight".