53781839806 has 8 divisors (see below), whose sum is σ = 82853104680. Its totient is φ = 26164138248.

The previous prime is 53781839777. The next prime is 53781839821. The reversal of 53781839806 is 60893818735.

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

It is a super-2 number, since 2×53781839806² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363390736 + ... + 363390883.

It is an arithmetic number, because the mean of its divisors is an integer number (10356638085).

Almost surely, 2^53781839806 is an apocalyptic number.

53781839806 is a deficient number, since it is larger than the sum of its proper divisors (29071264874).

53781839806 is a wasteful number, since it uses less digits than its factorization.

53781839806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726781658.

The product of its (nonzero) digits is 8709120, while the sum is 58.

The spelling of 53781839806 in words is "fifty-three billion, seven hundred eighty-one million, eight hundred thirty-nine thousand, eight hundred six".