551354312560 has 80 divisors (see below), whose sum is σ = 1314658668960. Its totient is φ = 214917857280.

The previous prime is 551354312549. The next prime is 551354312581. The reversal of 551354312560 is 65213453155.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×551354312560³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2801056 + ... + 2991424.

It is an arithmetic number, because the mean of its divisors is an integer number (16433233362).

Almost surely, 2^551354312560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551354312560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (657329334480).

551354312560 is an abundant number, since it is smaller than the sum of its proper divisors (763304356400).

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

551354312560 is a wasteful number, since it uses less digits than its factorization.

551354312560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191306 (or 191300 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 40.

The spelling of 551354312560 in words is "five hundred fifty-one billion, three hundred fifty-four million, three hundred twelve thousand, five hundred sixty".