505005555590 has 16 divisors (see below), whose sum is σ = 909023794272. Its totient is φ = 201999156864.

The previous prime is 505005555553. The next prime is 505005555631. The reversal of 505005555590 is 95555500505.

It is a super-2 number, since 2×505005555590² (a number of 24 digits) contains 22 as substring.

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, 381407 + ... + 1074933.

It is an arithmetic number, because the mean of its divisors is an integer number (56813987142).

Almost surely, 2^505005555590 is an apocalyptic number.

505005555590 is a deficient number, since it is larger than the sum of its proper divisors (404018238682).

505005555590 is a wasteful number, since it uses less digits than its factorization.

505005555590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766351.

The product of its (nonzero) digits is 703125, while the sum is 44.

The spelling of 505005555590 in words is "five hundred five billion, five million, five hundred fifty-five thousand, five hundred ninety".