505555561010 has 32 divisors (see below), whose sum is σ = 948731952960. Its totient is φ = 193792592448.

The previous prime is 505555561009. The next prime is 505555561031. The reversal of 505555561010 is 10165555505.

It is a happy 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, 11068820 + ... + 11114399.

It is an arithmetic number, because the mean of its divisors is an integer number (29647873530).

Almost surely, 2^505555561010 is an apocalyptic number.

505555561010 is a deficient number, since it is larger than the sum of its proper divisors (443176391950).

505555561010 is a wasteful number, since it uses less digits than its factorization.

505555561010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22183322.

The product of its (nonzero) digits is 93750, while the sum is 38.

The spelling of 505555561010 in words is "five hundred five billion, five hundred fifty-five million, five hundred sixty-one thousand, ten".