551661510606 has 16 divisors (see below), whose sum is σ = 1103334960000. Its totient is φ = 183885180408.

The previous prime is 551661510583. The next prime is 551661510629. The reversal of 551661510606 is 606015166155.

551661510606 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (551661510583) and next prime (551661510629).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172695 + ... + 1064493.

It is an arithmetic number, because the mean of its divisors is an integer number (68958435000).

Almost surely, 2^551661510606 is an apocalyptic number.

551661510606 is an abundant number, since it is smaller than the sum of its proper divisors (551673449394).

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

551661510606 is a wasteful number, since it uses less digits than its factorization.

551661510606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994903.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 551661510606 in words is "five hundred fifty-one billion, six hundred sixty-one million, five hundred ten thousand, six hundred six".