55739939457 has 4 divisors (see below), whose sum is σ = 74319919280. Its totient is φ = 37159959636.

The previous prime is 55739939441. The next prime is 55739939459. The reversal of 55739939457 is 75493993755.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 55739939457 - 2⁴ = 55739939441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55739939459) 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, 9289989907 + ... + 9289989912.

It is an arithmetic number, because the mean of its divisors is an integer number (18579979820).

Almost surely, 2^55739939457 is an apocalyptic number.

It is an amenable number.

55739939457 is a deficient number, since it is larger than the sum of its proper divisors (18579979823).

55739939457 is a wasteful number, since it uses less digits than its factorization.

55739939457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18579979822.

The product of its digits is 160744500, while the sum is 66.

The spelling of 55739939457 in words is "fifty-five billion, seven hundred thirty-nine million, nine hundred thirty-nine thousand, four hundred fifty-seven".