49548189887 has 4 divisors (see below), whose sum is σ = 56626502736. Its totient is φ = 42469877040.

The previous prime is 49548189833. The next prime is 49548189893. The reversal of 49548189887 is 78898184594.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49548189887 is a prime.

It is a super-3 number, since 3×49548189887³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49548189887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49548189487) 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 3 ways as a sum of consecutive naturals, for example, 3539156414 + ... + 3539156427.

It is an arithmetic number, because the mean of its divisors is an integer number (14156625684).

Almost surely, 2^49548189887 is an apocalyptic number.

49548189887 is a deficient number, since it is larger than the sum of its proper divisors (7078312849).

49548189887 is an equidigital number, since it uses as much as digits as its factorization.

49548189887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7078312848.

The product of its digits is 185794560, while the sum is 71.

The spelling of 49548189887 in words is "forty-nine billion, five hundred forty-eight million, one hundred eighty-nine thousand, eight hundred eighty-seven".