561901835997 has 16 divisors (see below), whose sum is σ = 832484993280. Its totient is φ = 374584201056.

The previous prime is 561901835867. The next prime is 561901836029. The reversal of 561901835997 is 799538109165.

561901835997 is a `hidden beast` number, since 5 + 6 + 190 + 1 + 8 + 359 + 97 = 666.

It is not a de Polignac number, because 561901835997 - 2¹⁴ = 561901819613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561901836997) 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, 147073 + ... + 1070249.

It is an arithmetic number, because the mean of its divisors is an integer number (52030312080).

Almost surely, 2^561901835997 is an apocalyptic number.

It is an amenable number.

561901835997 is a deficient number, since it is larger than the sum of its proper divisors (270583157283).

561901835997 is a wasteful number, since it uses less digits than its factorization.

561901835997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945729 (or 945723 counting only the distinct ones).

The product of its (nonzero) digits is 18370800, while the sum is 63.

The spelling of 561901835997 in words is "five hundred sixty-one billion, nine hundred one million, eight hundred thirty-five thousand, nine hundred ninety-seven".