551545545156 has 48 divisors (see below), whose sum is σ = 1302423640896. Its totient is φ = 181642973184.

The previous prime is 551545545143. The next prime is 551545545169. The reversal of 551545545156 is 651545545155.

It is an interprime number because it is at equal distance from previous prime (551545545143) and next prime (551545545169).

It is a junction number, because it is equal to n+sod(n) for n = 551545545099 and 551545545108.

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, 279660 + ... + 1086876.

It is an arithmetic number, because the mean of its divisors is an integer number (27133825852).

Almost surely, 2^551545545156 is an apocalyptic number.

It is an amenable number.

551545545156 is an abundant number, since it is smaller than the sum of its proper divisors (750878095740).

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

551545545156 is a wasteful number, since it uses less digits than its factorization.

551545545156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807908 (or 807906 counting only the distinct ones).

The product of its digits is 7500000, while the sum is 51.

Subtracting 551545545156 from its reverse (651545545155), we obtain a palindrome (99999999999).

The spelling of 551545545156 in words is "five hundred fifty-one billion, five hundred forty-five million, five hundred forty-five thousand, one hundred fifty-six".