49056267809 has 4 divisors (see below), whose sum is σ = 49131392916. Its totient is φ = 48981142704.

The previous prime is 49056267803. The next prime is 49056267811. The reversal of 49056267809 is 90876265094.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90876265094 = 2 ⋅45438132547.

It can be written as a sum of positive squares in 2 ways, for example, as 13173300625 + 35882967184 = 114775^2 + 189428^2 .

It is a cyclic number.

It is not a de Polignac number, because 49056267809 - 2²⁰ = 49055219233 is a prime.

It is a super-2 number, since 2×49056267809² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49056267803) 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, 37561574 + ... + 37562879.

It is an arithmetic number, because the mean of its divisors is an integer number (12282848229).

Almost surely, 2^49056267809 is an apocalyptic number.

It is an amenable number.

49056267809 is a deficient number, since it is larger than the sum of its proper divisors (75125107).

49056267809 is an equidigital number, since it uses as much as digits as its factorization.

49056267809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75125106.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 49056267809 in words is "forty-nine billion, fifty-six million, two hundred sixty-seven thousand, eight hundred nine".