749631992640 has 112 divisors (see below), whose sum is σ = 2394683803968. Its totient is φ = 198675431424.

The previous prime is 749631992623. The next prime is 749631992647. The reversal of 749631992640 is 46299136947.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749631992647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2238817 + ... + 2551776.

Almost surely, 2^749631992640 is an apocalyptic number.

It is an amenable number.

749631992640 is an abundant number, since it is smaller than the sum of its proper divisors (1645051811328).

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

749631992640 is a wasteful number, since it uses less digits than its factorization.

749631992640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4790776 (or 4790766 counting only the distinct ones).

The product of its (nonzero) digits is 17635968, while the sum is 60.

The spelling of 749631992640 in words is "seven hundred forty-nine billion, six hundred thirty-one million, nine hundred ninety-two thousand, six hundred forty".