748576318081 has 4 divisors (see below), whose sum is σ = 749300981572. Its totient is φ = 747851654592.

The previous prime is 748576318079. The next prime is 748576318093. The reversal of 748576318081 is 180813675847.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 316676307600 + 431900010481 = 562740^2 + 657191^2 .

It is a cyclic number.

It is not a de Polignac number, because 748576318081 - 2¹ = 748576318079 is a prime.

It is a super-2 number, since 2×748576318081² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (748576318031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362330196 + ... + 362332261.

It is an arithmetic number, because the mean of its divisors is an integer number (187325245393).

Almost surely, 2^748576318081 is an apocalyptic number.

It is an amenable number.

748576318081 is a deficient number, since it is larger than the sum of its proper divisors (724663491).

748576318081 is a wasteful number, since it uses less digits than its factorization.

748576318081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724663490.

The product of its (nonzero) digits is 9031680, while the sum is 58.

The spelling of 748576318081 in words is "seven hundred forty-eight billion, five hundred seventy-six million, three hundred eighteen thousand, eighty-one".