49856720651 has 4 divisors (see below), whose sum is σ = 52480758600. Its totient is φ = 47232682704.

The previous prime is 49856720633. The next prime is 49856720659. The reversal of 49856720651 is 15602765894.

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 49856720651 - 2¹⁴ = 49856704267 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49856720593 and 49856720602.

It is not an unprimeable number, because it can be changed into a prime (49856720659) 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, 1312018946 + ... + 1312018983.

It is an arithmetic number, because the mean of its divisors is an integer number (13120189650).

Almost surely, 2^49856720651 is an apocalyptic number.

49856720651 is a deficient number, since it is larger than the sum of its proper divisors (2624037949).

49856720651 is a wasteful number, since it uses less digits than its factorization.

49856720651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2624037948.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 49856720651 in words is "forty-nine billion, eight hundred fifty-six million, seven hundred twenty thousand, six hundred fifty-one".