49103887581 has 16 divisors (see below), whose sum is σ = 83138857600. Its totient is φ = 28059364224.

The previous prime is 49103887523. The next prime is 49103887601. The reversal of 49103887581 is 18578830194.

49103887581 is a `hidden beast` number, since 49 + 10 + 3 + 8 + 8 + 7 + 581 = 666.

It is not a de Polignac number, because 49103887581 - 2⁶ = 49103887517 is a prime.

It is a super-2 number, since 2×49103887581² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49103887381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129904276 + ... + 129904653.

It is an arithmetic number, because the mean of its divisors is an integer number (5196178600).

Almost surely, 2^49103887581 is an apocalyptic number.

It is an amenable number.

49103887581 is a deficient number, since it is larger than the sum of its proper divisors (34034970019).

49103887581 is a wasteful number, since it uses less digits than its factorization.

49103887581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259808945 (or 259808939 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 54.

The spelling of 49103887581 in words is "forty-nine billion, one hundred three million, eight hundred eighty-seven thousand, five hundred eighty-one".