49999618751 has 4 divisors (see below), whose sum is σ = 50223832512. Its totient is φ = 49775404992.

The previous prime is 49999618709. The next prime is 49999618807. The reversal of 49999618751 is 15781699994.

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

It is a cyclic number.

It is not a de Polignac number, because 49999618751 - 2¹⁸ = 49999356607 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 (49999611751) 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, 112106546 + ... + 112106991.

It is an arithmetic number, because the mean of its divisors is an integer number (12555958128).

Almost surely, 2^49999618751 is an apocalyptic number.

49999618751 is a deficient number, since it is larger than the sum of its proper divisors (224213761).

49999618751 is a wasteful number, since it uses less digits than its factorization.

49999618751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224213760.

The product of its digits is 44089920, while the sum is 68.

The spelling of 49999618751 in words is "forty-nine billion, nine hundred ninety-nine million, six hundred eighteen thousand, seven hundred fifty-one".