49813078519 has 4 divisors (see below), whose sum is σ = 49815688000. Its totient is φ = 49810469040.

The previous prime is 49813078499. The next prime is 49813078537. The reversal of 49813078519 is 91587031894.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49813078519 is a prime.

It is a super-2 number, since 2×49813078519² (a number of 22 digits) contains 22 as substring.

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 49813078519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49813078219) 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, 1275894 + ... + 1314355.

It is an arithmetic number, because the mean of its divisors is an integer number (12453922000).

Almost surely, 2^49813078519 is an apocalyptic number.

49813078519 is a deficient number, since it is larger than the sum of its proper divisors (2609481).

49813078519 is a wasteful number, since it uses less digits than its factorization.

49813078519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2609480.

The product of its (nonzero) digits is 2177280, while the sum is 55.

The spelling of 49813078519 in words is "forty-nine billion, eight hundred thirteen million, seventy-eight thousand, five hundred nineteen".