551535510350420 has 48 divisors (see below), whose sum is σ = 1206167067721728. Its totient is φ = 211608257441280.

The previous prime is 551535510350401. The next prime is 551535510350467. The reversal of 551535510350420 is 24053015535155.

It is a happy number.

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, 3936095444 + ... + 3936235563.

It is an arithmetic number, because the mean of its divisors is an integer number (25128480577536).

Almost surely, 2^{551535510350420} is an apocalyptic number.

It is an amenable number.

551535510350420 is an abundant number, since it is smaller than the sum of its proper divisors (654631557371308).

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

551535510350420 is a wasteful number, since it uses less digits than its factorization.

551535510350420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7872331160 (or 7872331158 counting only the distinct ones).

The product of its (nonzero) digits is 1125000, while the sum is 44.

Adding to 551535510350420 its reverse (24053015535155), we get a palindrome (575588525885575).

The spelling of 551535510350420 in words is "five hundred fifty-one trillion, five hundred thirty-five billion, five hundred ten million, three hundred fifty thousand, four hundred twenty".