55798115509 has 8 divisors (see below), whose sum is σ = 56988972288. Its totient is φ = 54607411440.

The previous prime is 55798115507. The next prime is 55798115533. The reversal of 55798115509 is 90551189755.

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

It is a cyclic number.

It is not a de Polignac number, because 55798115509 - 2¹ = 55798115507 is a prime.

It is a super-2 number, since 2×55798115509² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55798115509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55798115507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 995779 + ... + 1050319.

It is an arithmetic number, because the mean of its divisors is an integer number (7123621536).

Almost surely, 2^55798115509 is an apocalyptic number.

It is an amenable number.

55798115509 is a deficient number, since it is larger than the sum of its proper divisors (1190856779).

55798115509 is a wasteful number, since it uses less digits than its factorization.

55798115509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76355.

The product of its (nonzero) digits is 2835000, while the sum is 55.

The spelling of 55798115509 in words is "fifty-five billion, seven hundred ninety-eight million, one hundred fifteen thousand, five hundred nine".