505364540987 has 4 divisors (see below), whose sum is σ = 505376331480. Its totient is φ = 505352750496.

The previous prime is 505364540971. The next prime is 505364540999. The reversal of 505364540987 is 789045463505.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 505364540987 - 2⁴ = 505364540971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505364543987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5830718 + ... + 5916755.

It is an arithmetic number, because the mean of its divisors is an integer number (126344082870).

Almost surely, 2^505364540987 is an apocalyptic number.

505364540987 is a deficient number, since it is larger than the sum of its proper divisors (11790493).

505364540987 is a wasteful number, since it uses less digits than its factorization.

505364540987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11790492.

The product of its (nonzero) digits is 18144000, while the sum is 56.

The spelling of 505364540987 in words is "five hundred five billion, three hundred sixty-four million, five hundred forty thousand, nine hundred eighty-seven".