561722833950 has 48 divisors (see below), whose sum is σ = 1394448200496. Its totient is φ = 149644844800.

The previous prime is 561722833811. The next prime is 561722833957. The reversal of 561722833950 is 59338227165.

It is a junction number, because it is equal to n+sod(n) for n = 561722833893 and 561722833902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561722833957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1696431 + ... + 2000330.

It is an arithmetic number, because the mean of its divisors is an integer number (29051004177).

Almost surely, 2^561722833950 is an apocalyptic number.

561722833950 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

561722833950 is an abundant number, since it is smaller than the sum of its proper divisors (832725366546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561722833950 is a wasteful number, since it uses less digits than its factorization.

561722833950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3697789 (or 3697784 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 51.

The spelling of 561722833950 in words is "five hundred sixty-one billion, seven hundred twenty-two million, eight hundred thirty-three thousand, nine hundred fifty".