561494602535 has 16 divisors (see below), whose sum is σ = 674695935936. Its totient is φ = 448594384128.

The previous prime is 561494602531. The next prime is 561494602541. The reversal of 561494602535 is 535206494165.

It is a cyclic number.

It is not a de Polignac number, because 561494602535 - 2² = 561494602531 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561494602531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16218854 + ... + 16253436.

It is an arithmetic number, because the mean of its divisors is an integer number (42168495996).

Almost surely, 2^561494602535 is an apocalyptic number.

561494602535 is a deficient number, since it is larger than the sum of its proper divisors (113201333401).

561494602535 is a wasteful number, since it uses less digits than its factorization.

561494602535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38842.

The product of its (nonzero) digits is 3888000, while the sum is 50.

The spelling of 561494602535 in words is "five hundred sixty-one billion, four hundred ninety-four million, six hundred two thousand, five hundred thirty-five".