561954471943 has 8 divisors (see below), whose sum is σ = 562203897696. Its totient is φ = 561705110400.

The previous prime is 561954471917. The next prime is 561954471959. The reversal of 561954471943 is 349174459165.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 561954471943 - 2³³ = 553364537351 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 (561954471913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25671363 + ... + 25693243.

It is an arithmetic number, because the mean of its divisors is an integer number (70275487212).

Almost surely, 2^561954471943 is an apocalyptic number.

561954471943 is a deficient number, since it is larger than the sum of its proper divisors (249425753).

561954471943 is a wasteful number, since it uses less digits than its factorization.

561954471943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32105.

The product of its digits is 16329600, while the sum is 58.

The spelling of 561954471943 in words is "five hundred sixty-one billion, nine hundred fifty-four million, four hundred seventy-one thousand, nine hundred forty-three".