49887685418 has 4 divisors (see below), whose sum is σ = 74831528130. Its totient is φ = 24943842708.

The previous prime is 49887685417. The next prime is 49887685511. The reversal of 49887685418 is 81458678894.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 45961785769 + 3925899649 = 214387^2 + 62657^2 .

It is not an unprimeable number, because it can be changed into a prime (49887685411) 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 as a sum of consecutive naturals, namely, 12471921353 + ... + 12471921356.

Almost surely, 2^49887685418 is an apocalyptic number.

49887685418 is a deficient number, since it is larger than the sum of its proper divisors (24943842712).

49887685418 is a wasteful number, since it uses less digits than its factorization.

49887685418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24943842711.

The product of its digits is 123863040, while the sum is 68.

The spelling of 49887685418 in words is "forty-nine billion, eight hundred eighty-seven million, six hundred eighty-five thousand, four hundred eighteen".