748472495581 has 4 divisors (see below), whose sum is σ = 772616769664. Its totient is φ = 724328221500.

The previous prime is 748472495557. The next prime is 748472495597. The reversal of 748472495581 is 185594274847.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 748472495581 - 2¹¹ = 748472493533 is a prime.

It is a super-2 number, since 2×748472495581² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (748472595581) 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, 12072136995 + ... + 12072137056.

It is an arithmetic number, because the mean of its divisors is an integer number (193154192416).

Almost surely, 2^748472495581 is an apocalyptic number.

It is an amenable number.

748472495581 is a deficient number, since it is larger than the sum of its proper divisors (24144274083).

748472495581 is a wasteful number, since it uses less digits than its factorization.

748472495581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24144274082.

The product of its digits is 90316800, while the sum is 64.

The spelling of 748472495581 in words is "seven hundred forty-eight billion, four hundred seventy-two million, four hundred ninety-five thousand, five hundred eighty-one".