747499765072 has 80 divisors (see below), whose sum is σ = 1589405749200. Its totient is φ = 338981027840.

The previous prime is 747499765069. The next prime is 747499765121. The reversal of 747499765072 is 270567994747.

It can be written as a sum of positive squares in 8 ways, for example, as 74581425216 + 672918339856 = 273096^2 + 820316^2 .

It is a junction number, because it is equal to n+sod(n) for n = 747499764989 and 747499765007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4018704 + ... + 4200592.

It is an arithmetic number, because the mean of its divisors is an integer number (19867571865).

Almost surely, 2^747499765072 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 747499765072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (794702874600).

747499765072 is an abundant number, since it is smaller than the sum of its proper divisors (841905984128).

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

747499765072 is a wasteful number, since it uses less digits than its factorization.

747499765072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182464 (or 182458 counting only the distinct ones).

The product of its (nonzero) digits is 186701760, while the sum is 67.

The spelling of 747499765072 in words is "seven hundred forty-seven billion, four hundred ninety-nine million, seven hundred sixty-five thousand, seventy-two".