551287888782155 has 32 divisors (see below), whose sum is σ = 756545400069120. Its totient is φ = 377779278464640.

The previous prime is 551287888782151. The next prime is 551287888782187.

551287888782155 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 551287888782155 - 2² = 551287888782151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551287888782155.

It is not an unprimeable number, because it can be changed into a prime (551287888782151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1742003426 + ... + 1742319864.

It is an arithmetic number, because the mean of its divisors is an integer number (23642043752160).

Almost surely, 2^{551287888782155} is an apocalyptic number.

551287888782155 is a deficient number, since it is larger than the sum of its proper divisors (205257511286965).

551287888782155 is a wasteful number, since it uses less digits than its factorization.

551287888782155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348779.

The product of its digits is 4014080000, while the sum is 80.

The spelling of 551287888782155 in words is "five hundred fifty-one trillion, two hundred eighty-seven billion, eight hundred eighty-eight million, seven hundred eighty-two thousand, one hundred fifty-five".