749718251520 has 576 divisors, whose sum is σ = 2849739459840. Its totient is φ = 167702298624.

The previous prime is 749718251507. The next prime is 749718251549. The reversal of 749718251520 is 25152817947.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70742862 + ... + 70753458.

It is an arithmetic number, because the mean of its divisors is an integer number (4947464340).

Almost surely, 2^749718251520 is an apocalyptic number.

749718251520 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 749718251520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1424869729920).

749718251520 is an abundant number, since it is smaller than the sum of its proper divisors (2100021208320).

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

749718251520 is a wasteful number, since it uses less digits than its factorization.

749718251520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10688 (or 10661 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 51.

The spelling of 749718251520 in words is "seven hundred forty-nine billion, seven hundred eighteen million, two hundred fifty-one thousand, five hundred twenty".