49638394591 has 8 divisors (see below), whose sum is σ = 52602505200. Its totient is φ = 46757780160.

The previous prime is 49638394549. The next prime is 49638394613. The reversal of 49638394591 is 19549383694.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 49638394591 - 2²¹ = 49636297439 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 (49638394291) 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 7 ways as a sum of consecutive naturals, for example, 20872821 + ... + 20875198.

It is an arithmetic number, because the mean of its divisors is an integer number (6575313150).

Almost surely, 2^49638394591 is an apocalyptic number.

49638394591 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

49638394591 is a deficient number, since it is larger than the sum of its proper divisors (2964110609).

49638394591 is a wasteful number, since it uses less digits than its factorization.

49638394591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41748089.

The product of its digits is 25194240, while the sum is 61.

The spelling of 49638394591 in words is "forty-nine billion, six hundred thirty-eight million, three hundred ninety-four thousand, five hundred ninety-one".