55161210266 has 4 divisors (see below), whose sum is σ = 82741815402. Its totient is φ = 27580605132.

The previous prime is 55161210257. The next prime is 55161210283. The reversal of 55161210266 is 66201216155.

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

It can be written as a sum of positive squares in only one way, i.e., 43189568041 + 11971642225 = 207821^2 + 109415^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13790302565 + ... + 13790302568.

Almost surely, 2^55161210266 is an apocalyptic number.

55161210266 is a deficient number, since it is larger than the sum of its proper divisors (27580605136).

55161210266 is a wasteful number, since it uses less digits than its factorization.

55161210266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27580605135.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 55161210266 in words is "fifty-five billion, one hundred sixty-one million, two hundred ten thousand, two hundred sixty-six".