55321345512 has 96 divisors (see below), whose sum is σ = 150714837000. Its totient is φ = 18331637760.

The previous prime is 55321345501. The next prime is 55321345531. The reversal of 55321345512 is 21554312355.

55321345512 is a `hidden beast` number, since 5 + 5 + 3 + 2 + 134 + 5 + 512 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 29428030116 + 25893315396 = 171546^2 + 160914^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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 23 ways as a sum of consecutive naturals, for example, 12545164 + ... + 12549572.

Almost surely, 2^55321345512 is an apocalyptic number.

It is an amenable number.

55321345512 is an abundant number, since it is smaller than the sum of its proper divisors (95393491488).

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

55321345512 is a wasteful number, since it uses less digits than its factorization.

55321345512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5411 (or 5404 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

Adding to 55321345512 its reverse (21554312355), we get a palindrome (76875657867).

The spelling of 55321345512 in words is "fifty-five billion, three hundred twenty-one million, three hundred forty-five thousand, five hundred twelve".