49738985509 has 4 divisors (see below), whose sum is σ = 52664808204. Its totient is φ = 46813162816.

The previous prime is 49738985459. The next prime is 49738985531. The reversal of 49738985509 is 90558983794.

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 46201353025 + 3537632484 = 214945^2 + 59478^2 .

It is a cyclic number.

It is not a de Polignac number, because 49738985509 - 2²⁷ = 49604767781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49738985599) 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, 1462911322 + ... + 1462911355.

It is an arithmetic number, because the mean of its divisors is an integer number (13166202051).

Almost surely, 2^49738985509 is an apocalyptic number.

It is an amenable number.

49738985509 is a deficient number, since it is larger than the sum of its proper divisors (2925822695).

49738985509 is a wasteful number, since it uses less digits than its factorization.

49738985509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2925822694.

The product of its (nonzero) digits is 97977600, while the sum is 67.

The spelling of 49738985509 in words is "forty-nine billion, seven hundred thirty-eight million, nine hundred eighty-five thousand, five hundred nine".