551612216154 has 16 divisors (see below), whose sum is σ = 1103246157600. Its totient is φ = 183867117840.

The previous prime is 551612216147. The next prime is 551612216321. The reversal of 551612216154 is 451612216155.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 565329 + ... + 1192820.

It is an arithmetic number, because the mean of its divisors is an integer number (68952884850).

Almost surely, 2^551612216154 is an apocalyptic number.

551612216154 is an abundant number, since it is smaller than the sum of its proper divisors (551633941446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551612216154 is a wasteful number, since it uses less digits than its factorization.

551612216154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1810445.

The product of its digits is 72000, while the sum is 39.

Subtracting from 551612216154 its reverse (451612216155), we obtain a palindrome (99999999999).

The spelling of 551612216154 in words is "five hundred fifty-one billion, six hundred twelve million, two hundred sixteen thousand, one hundred fifty-four".