55506164999 has 4 divisors (see below), whose sum is σ = 55506852840. Its totient is φ = 55505477160.

The previous prime is 55506164927. The next prime is 55506165017. The reversal of 55506164999 is 99946160555.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55506164999 - 2¹² = 55506160903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55506164599) 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, 203864 + ... + 390605.

It is an arithmetic number, because the mean of its divisors is an integer number (13876713210).

Almost surely, 2^55506164999 is an apocalyptic number.

55506164999 is a deficient number, since it is larger than the sum of its proper divisors (687841).

55506164999 is an equidigital number, since it uses as much as digits as its factorization.

55506164999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687840.

The product of its (nonzero) digits is 13122000, while the sum is 59.

The spelling of 55506164999 in words is "fifty-five billion, five hundred six million, one hundred sixty-four thousand, nine hundred ninety-nine".