505281490645 has 8 divisors (see below), whose sum is σ = 606341607840. Its totient is φ = 404222646480.

The previous prime is 505281490639. The next prime is 505281490661. The reversal of 505281490645 is 546094182505.

It is a happy number.

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

It is not a de Polignac number, because 505281490645 - 2³⁷ = 367842537173 is a prime.

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, 1348746 + ... + 1682164.

It is an arithmetic number, because the mean of its divisors is an integer number (75792700980).

Almost surely, 2^505281490645 is an apocalyptic number.

It is an amenable number.

505281490645 is a deficient number, since it is larger than the sum of its proper divisors (101060117195).

505281490645 is a wasteful number, since it uses less digits than its factorization.

505281490645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636515.

The product of its (nonzero) digits is 1728000, while the sum is 49.

The spelling of 505281490645 in words is "five hundred five billion, two hundred eighty-one million, four hundred ninety thousand, six hundred forty-five".