49786871491 has 4 divisors (see below), whose sum is σ = 56899281712. Its totient is φ = 42674461272.

The previous prime is 49786871437. The next prime is 49786871527. The reversal of 49786871491 is 19417868794.

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

It is a cyclic number.

It is not a de Polignac number, because 49786871491 - 2¹⁵ = 49786838723 is a prime.

It is a super-2 number, since 2×49786871491² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (49786871591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3556205100 + ... + 3556205113.

It is an arithmetic number, because the mean of its divisors is an integer number (14224820428).

Almost surely, 2^49786871491 is an apocalyptic number.

49786871491 is a deficient number, since it is larger than the sum of its proper divisors (7112410221).

49786871491 is an equidigital number, since it uses as much as digits as its factorization.

49786871491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7112410220.

The product of its digits is 24385536, while the sum is 64.

The spelling of 49786871491 in words is "forty-nine billion, seven hundred eighty-six million, eight hundred seventy-one thousand, four hundred ninety-one".