551266135602 has 96 divisors (see below), whose sum is σ = 1418524212672. Its totient is φ = 141459405696.

The previous prime is 551266135579. The next prime is 551266135681. The reversal of 551266135602 is 206531662155.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1807708 + ... + 2090535.

It is an arithmetic number, because the mean of its divisors is an integer number (14776293882).

Almost surely, 2^551266135602 is an apocalyptic number.

551266135602 is an abundant number, since it is smaller than the sum of its proper divisors (867258077070).

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

551266135602 is a wasteful number, since it uses less digits than its factorization.

551266135602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3898312 (or 3898305 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 42.

Adding to 551266135602 its reverse (206531662155), we get a palindrome (757797797757).

The spelling of 551266135602 in words is "five hundred fifty-one billion, two hundred sixty-six million, one hundred thirty-five thousand, six hundred two".