561404421053 has 16 divisors (see below), whose sum is σ = 646382714880. Its totient is φ = 477622278000.

The previous prime is 561404421043. The next prime is 561404421103. The reversal of 561404421053 is 350124404165.

It is a de Polignac number, because none of the positive numbers 2^k-561404421053 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561404421013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3929828 + ... + 4070178.

It is an arithmetic number, because the mean of its divisors is an integer number (40398919680).

Almost surely, 2^561404421053 is an apocalyptic number.

It is an amenable number.

561404421053 is a deficient number, since it is larger than the sum of its proper divisors (84978293827).

561404421053 is a wasteful number, since it uses less digits than its factorization.

561404421053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144608.

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 561404421053 in words is "five hundred sixty-one billion, four hundred four million, four hundred twenty-one thousand, fifty-three".