48156985809 has 45 divisors (see below), whose sum is σ = 74047400427. Its totient is φ = 31189563216.

The previous prime is 48156985717. The next prime is 48156985817. The reversal of 48156985809 is 90858965184.

The square root of 48156985809 is 219447.

It is a perfect power (a square), and thus also a powerful number.

48156985809 is a `hidden beast` number, since 48 + 1 + 5 + 6 + 9 + 8 + 580 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 43091532225 + 5065453584 = 207585^2 + 71172^2 .

It is not a de Polignac number, because 48156985809 - 2³⁵ = 13797247441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (48156985109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 73075522 + ... + 73076180.

Almost surely, 2^48156985809 is an apocalyptic number.

48156985809 is the 219447-th square number.

48156985809 is the 109724-th centered octagonal number.

It is an amenable number.

48156985809 is a deficient number, since it is larger than the sum of its proper divisors (25890414618).

48156985809 is an frugal number, since it uses more digits than its factorization.

48156985809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 63.

The spelling of 48156985809 in words is "forty-eight billion, one hundred fifty-six million, nine hundred eighty-five thousand, eight hundred nine".