747354491520 has 768 divisors, whose sum is σ = 3035159164800. Its totient is φ = 154996015104.

The previous prime is 747354491509. The next prime is 747354491567. The reversal of 747354491520 is 25194453747.

It is a happy number.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 72154182 + ... + 72164538.

Almost surely, 2^747354491520 is an apocalyptic number.

747354491520 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 747354491520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1517579582400).

747354491520 is an abundant number, since it is smaller than the sum of its proper divisors (2287804673280).

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

747354491520 is a wasteful number, since it uses less digits than its factorization.

747354491520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10465 (or 10446 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 51.

The spelling of 747354491520 in words is "seven hundred forty-seven billion, three hundred fifty-four million, four hundred ninety-one thousand, five hundred twenty".