551723411772 has 144 divisors (see below), whose sum is σ = 1591722279840. Its totient is φ = 164284485120.

The previous prime is 551723411713. The next prime is 551723411783. The reversal of 551723411772 is 277114327155.

551723411772 is a `hidden beast` number, since 5 + 517 + 23 + 41 + 1 + 7 + 72 = 666.

It is a super-3 number, since 3×551723411772³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1144788 + ... + 1553700.

Almost surely, 2^551723411772 is an apocalyptic number.

551723411772 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551723411772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (795861139920).

551723411772 is an abundant number, since it is smaller than the sum of its proper divisors (1039998868068).

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

551723411772 is a wasteful number, since it uses less digits than its factorization.

551723411772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409001 (or 408962 counting only the distinct ones).

The product of its digits is 411600, while the sum is 45.

The spelling of 551723411772 in words is "five hundred fifty-one billion, seven hundred twenty-three million, four hundred eleven thousand, seven hundred seventy-two".