55396551899 has 8 divisors (see below), whose sum is σ = 59668974960. Its totient is φ = 51125721696.

The previous prime is 55396551893. The next prime is 55396551907. The reversal of 55396551899 is 99815569355.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55396551899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55396551893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325484 + ... + 465545.

It is an arithmetic number, because the mean of its divisors is an integer number (7458621870).

Almost surely, 2^55396551899 is an apocalyptic number.

55396551899 is a deficient number, since it is larger than the sum of its proper divisors (4272423061).

55396551899 is a wasteful number, since it uses less digits than its factorization.

55396551899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796429.

The product of its digits is 65610000, while the sum is 65.

The spelling of 55396551899 in words is "fifty-five billion, three hundred ninety-six million, five hundred fifty-one thousand, eight hundred ninety-nine".