48773721639 has 16 divisors (see below), whose sum is σ = 71430624000. Its totient is φ = 29465130816.

The previous prime is 48773721631. The next prime is 48773721643. The reversal of 48773721639 is 93612737784.

It is a happy number.

It is not a de Polignac number, because 48773721639 - 2³ = 48773721631 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48773721631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18600414 + ... + 18603035.

It is an arithmetic number, because the mean of its divisors is an integer number (4464414000).

Almost surely, 2^48773721639 is an apocalyptic number.

48773721639 is a deficient number, since it is larger than the sum of its proper divisors (22656902361).

48773721639 is a wasteful number, since it uses less digits than its factorization.

48773721639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37203494.

The product of its digits is 10668672, while the sum is 57.

The spelling of 48773721639 in words is "forty-eight billion, seven hundred seventy-three million, seven hundred twenty-one thousand, six hundred thirty-nine".