49969736820 has 36 divisors (see below), whose sum is σ = 151574868900. Its totient is φ = 13325263104.

The previous prime is 49969736779. The next prime is 49969736837. The reversal of 49969736820 is 2863796994.

49969736820 is a `hidden beast` number, since 499 + 6 + 97 + 36 + 8 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9409388004 + 40560348816 = 97002^2 + 201396^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 138804645 + ... + 138805004.

It is an arithmetic number, because the mean of its divisors is an integer number (4210413025).

Almost surely, 2^49969736820 is an apocalyptic number.

It is an amenable number.

49969736820 is an abundant number, since it is smaller than the sum of its proper divisors (101605132080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49969736820 is a wasteful number, since it uses less digits than its factorization.

49969736820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277609664 (or 277609659 counting only the distinct ones).

The product of its (nonzero) digits is 35271936, while the sum is 63.

The spelling of 49969736820 in words is "forty-nine billion, nine hundred sixty-nine million, seven hundred thirty-six thousand, eight hundred twenty".