505005551005 has 8 divisors (see below), whose sum is σ = 606012850872. Its totient is φ = 404000314368.

The previous prime is 505005550999. The next prime is 505005551023. The reversal of 505005551005 is 500155500505.

It can be written as a sum of positive squares in 4 ways, for example, as 101573514436 + 403432036569 = 318706^2 + 635163^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 505005551005 - 2²⁷ = 504871333277 is a prime.

It is a Duffinian number.

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, 86649 + ... + 1008721.

It is an arithmetic number, because the mean of its divisors is an integer number (75751606359).

Almost surely, 2^505005551005 is an apocalyptic number.

It is an amenable number.

505005551005 is a deficient number, since it is larger than the sum of its proper divisors (101007299867).

505005551005 is a wasteful number, since it uses less digits than its factorization.

505005551005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031615.

The product of its (nonzero) digits is 15625, while the sum is 31.

The spelling of 505005551005 in words is "five hundred five billion, five million, five hundred fifty-one thousand, five".