49689515536 has 20 divisors (see below), whose sum is σ = 96693851500. Its totient is φ = 24736263552.

The previous prime is 49689515527. The next prime is 49689515539. The reversal of 49689515536 is 63551598694.

It can be written as a sum of positive squares in 2 ways, for example, as 27243483136 + 22446032400 = 165056^2 + 149820^2 .

It is not an unprimeable number, because it can be changed into a prime (49689515539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6777111 + ... + 6784438.

It is an arithmetic number, because the mean of its divisors is an integer number (4834692575).

Almost surely, 2^49689515536 is an apocalyptic number.

It is an amenable number.

49689515536 is a deficient number, since it is larger than the sum of its proper divisors (47004335964).

49689515536 is a wasteful number, since it uses less digits than its factorization.

49689515536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13561786 (or 13561780 counting only the distinct ones).

The product of its digits is 34992000, while the sum is 61.

The spelling of 49689515536 in words is "forty-nine billion, six hundred eighty-nine million, five hundred fifteen thousand, five hundred thirty-six".