49856720649 has 8 divisors (see below), whose sum is σ = 66478278240. Its totient is φ = 33236488416.

The previous prime is 49856720633. The next prime is 49856720659. The reversal of 49856720649 is 94602765894.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 49856720649 - 2⁴ = 49856720633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 49856720592 and 49856720601.

It is not an unprimeable number, because it can be changed into a prime (49856720609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239964 + ... + 396605.

It is an arithmetic number, because the mean of its divisors is an integer number (8309784780).

Almost surely, 2^49856720649 is an apocalyptic number.

It is an amenable number.

49856720649 is a deficient number, since it is larger than the sum of its proper divisors (16621557591).

49856720649 is a wasteful number, since it uses less digits than its factorization.

49856720649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662679.

The product of its (nonzero) digits is 26127360, while the sum is 60.

The spelling of 49856720649 in words is "forty-nine billion, eight hundred fifty-six million, seven hundred twenty thousand, six hundred forty-nine".