748539397857 has 4 divisors (see below), whose sum is σ = 998052530480. Its totient is φ = 499026265236.

The previous prime is 748539397843. The next prime is 748539397871. The reversal of 748539397857 is 758793935847.

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 an interprime number because it is at equal distance from previous prime (748539397843) and next prime (748539397871).

It is not a de Polignac number, because 748539397857 - 2¹² = 748539393761 is a prime.

It is a super-2 number, since 2×748539397857² (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 (748539397897) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 124756566307 + ... + 124756566312.

It is an arithmetic number, because the mean of its divisors is an integer number (249513132620).

Almost surely, 2^748539397857 is an apocalyptic number.

It is an amenable number.

748539397857 is a deficient number, since it is larger than the sum of its proper divisors (249513132623).

748539397857 is a wasteful number, since it uses less digits than its factorization.

748539397857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249513132622.

The product of its digits is 1600300800, while the sum is 75.

The spelling of 748539397857 in words is "seven hundred forty-eight billion, five hundred thirty-nine million, three hundred ninety-seven thousand, eight hundred fifty-seven".