561071063631 has 32 divisors (see below), whose sum is σ = 807271819200. Its totient is φ = 344575954944.

The previous prime is 561071063627. The next prime is 561071063681. The reversal of 561071063631 is 136360170165.

It is a happy number.

It is not a de Polignac number, because 561071063631 - 2² = 561071063627 is a prime.

It is a super-2 number, since 2×561071063631² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 561071063631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561071063681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60009345 + ... + 60018693.

It is an arithmetic number, because the mean of its divisors is an integer number (25227244350).

Almost surely, 2^561071063631 is an apocalyptic number.

561071063631 is a deficient number, since it is larger than the sum of its proper divisors (246200755569).

561071063631 is a wasteful number, since it uses less digits than its factorization.

561071063631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12315.

The product of its (nonzero) digits is 68040, while the sum is 39.

The spelling of 561071063631 in words is "five hundred sixty-one billion, seventy-one million, sixty-three thousand, six hundred thirty-one".