49787115557 has 16 divisors (see below), whose sum is σ = 53537602560. Its totient is φ = 46150206192.

The previous prime is 49787115533. The next prime is 49787115583. The reversal of 49787115557 is 75551178794.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49787115557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49787115496 and 49787115505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49787615557) 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 15 ways as a sum of consecutive naturals, for example, 4855478 + ... + 4865720.

It is an arithmetic number, because the mean of its divisors is an integer number (3346100160).

Almost surely, 2^49787115557 is an apocalyptic number.

49787115557 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

49787115557 is a deficient number, since it is larger than the sum of its proper divisors (3750487003).

49787115557 is a wasteful number, since it uses less digits than its factorization.

49787115557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15752.

The product of its digits is 12348000, while the sum is 59.

The spelling of 49787115557 in words is "forty-nine billion, seven hundred eighty-seven million, one hundred fifteen thousand, five hundred fifty-seven".