48949311613 has 4 divisors (see below), whose sum is σ = 50637218940. Its totient is φ = 47261404288.

The previous prime is 48949311589. The next prime is 48949311661. The reversal of 48949311613 is 31611394984.

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

It can be written as a sum of positive squares in 2 ways, for example, as 32350339044 + 16598972569 = 179862^2 + 128837^2 .

It is a cyclic number.

It is not a de Polignac number, because 48949311613 - 2²⁹ = 48412440701 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 (48979311613) 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, 843953620 + ... + 843953677.

It is an arithmetic number, because the mean of its divisors is an integer number (12659304735).

Almost surely, 2^48949311613 is an apocalyptic number.

It is an amenable number.

48949311613 is a deficient number, since it is larger than the sum of its proper divisors (1687907327).

48949311613 is a wasteful number, since it uses less digits than its factorization.

48949311613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687907326.

The product of its digits is 559872, while the sum is 49.

The spelling of 48949311613 in words is "forty-eight billion, nine hundred forty-nine million, three hundred eleven thousand, six hundred thirteen".