561249149715 has 16 divisors (see below), whose sum is σ = 997776266400. Its totient is φ = 299332879776.

The previous prime is 561249149663. The next prime is 561249149729. The reversal of 561249149715 is 517941942165.

561249149715 is a `hidden beast` number, since 5 + 61 + 2 + 4 + 91 + 497 + 1 + 5 = 666.

It is not a de Polignac number, because 561249149715 - 2¹⁴ = 561249133331 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2078700420 + ... + 2078700689.

It is an arithmetic number, because the mean of its divisors is an integer number (62361016650).

Almost surely, 2^561249149715 is an apocalyptic number.

561249149715 is a deficient number, since it is larger than the sum of its proper divisors (436527116685).

561249149715 is a wasteful number, since it uses less digits than its factorization.

561249149715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4157401123 (or 4157401117 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 54.

The spelling of 561249149715 in words is "five hundred sixty-one billion, two hundred forty-nine million, one hundred forty-nine thousand, seven hundred fifteen".