749641758120 has 320 divisors, whose sum is σ = 2585865522240. Its totient is φ = 194667494400.

The previous prime is 749641758071. The next prime is 749641758197. The reversal of 749641758120 is 21857146947.

749641758120 is a `hidden beast` number, since 7 + 49 + 6 + 4 + 17 + 581 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 75846699 + ... + 75856581.

It is an arithmetic number, because the mean of its divisors is an integer number (8080829757).

Almost surely, 2^749641758120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 749641758120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1292932761120).

749641758120 is an abundant number, since it is smaller than the sum of its proper divisors (1836223764120).

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

749641758120 is a wasteful number, since it uses less digits than its factorization.

749641758120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10518 (or 10505 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

The spelling of 749641758120 in words is "seven hundred forty-nine billion, six hundred forty-one million, seven hundred fifty-eight thousand, one hundred twenty".