49807508957 has 4 divisors (see below), whose sum is σ = 49852913436. Its totient is φ = 49762104480.

The previous prime is 49807508929. The next prime is 49807508977. The reversal of 49807508957 is 75980570894.

49807508957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17353846756 + 32453662201 = 131734^2 + 180149^2 .

It is a cyclic number.

It is not a de Polignac number, because 49807508957 - 2³⁰ = 48733767133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49807508957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49807508977) 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, 22700594 + ... + 22702787.

It is an arithmetic number, because the mean of its divisors is an integer number (12463228359).

Almost surely, 2^49807508957 is an apocalyptic number.

It is an amenable number.

49807508957 is a deficient number, since it is larger than the sum of its proper divisors (45404479).

49807508957 is a wasteful number, since it uses less digits than its factorization.

49807508957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45404478.

The product of its (nonzero) digits is 25401600, while the sum is 62.

The spelling of 49807508957 in words is "forty-nine billion, eight hundred seven million, five hundred eight thousand, nine hundred fifty-seven".