748148477785 has 16 divisors (see below), whose sum is σ = 908662373136. Its totient is φ = 591284809728.

The previous prime is 748148477777. The next prime is 748148477821. The reversal of 748148477785 is 587774841847.

It can be written as a sum of positive squares in 8 ways, for example, as 39273726976 + 708874750809 = 198176^2 + 841947^2 .

It is a cyclic number.

It is not a de Polignac number, because 748148477785 - 2³ = 748148477777 is a prime.

It is a super-2 number, since 2×748148477785² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1114572 + ... + 1654861.

It is an arithmetic number, because the mean of its divisors is an integer number (56791398321).

Almost surely, 2^748148477785 is an apocalyptic number.

It is an amenable number.

748148477785 is a deficient number, since it is larger than the sum of its proper divisors (160513895351).

748148477785 is a wasteful number, since it uses less digits than its factorization.

748148477785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2770092.

The product of its digits is 393379840, while the sum is 70.

The spelling of 748148477785 in words is "seven hundred forty-eight billion, one hundred forty-eight million, four hundred seventy-seven thousand, seven hundred eighty-five".