49031287679 has 4 divisors (see below), whose sum is σ = 53488677480. Its totient is φ = 44573897880.

The previous prime is 49031287633. The next prime is 49031287687. The reversal of 49031287679 is 97678213094.

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 49031287679 - 2¹⁶ = 49031222143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49031287379) 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 3 ways as a sum of consecutive naturals, for example, 2228694884 + ... + 2228694905.

It is an arithmetic number, because the mean of its divisors is an integer number (13372169370).

Almost surely, 2^49031287679 is an apocalyptic number.

49031287679 is a deficient number, since it is larger than the sum of its proper divisors (4457389801).

49031287679 is a wasteful number, since it uses less digits than its factorization.

49031287679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4457389800.

The product of its (nonzero) digits is 4572288, while the sum is 56.

The spelling of 49031287679 in words is "forty-nine billion, thirty-one million, two hundred eighty-seven thousand, six hundred seventy-nine".