561515100050 has 24 divisors (see below), whose sum is σ = 1044581188656. Its totient is φ = 224570964240.

The previous prime is 561515100019. The next prime is 561515100067. The reversal of 561515100050 is 50001515165.

It is a happy number.

561515100050 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 561515099986 and 561515100022.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 552332 + ... + 1195031.

It is an arithmetic number, because the mean of its divisors is an integer number (43524216194).

Almost surely, 2^561515100050 is an apocalyptic number.

561515100050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

561515100050 is a deficient number, since it is larger than the sum of its proper divisors (483066088606).

561515100050 is a wasteful number, since it uses less digits than its factorization.

561515100050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753802 (or 1753797 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 29.

The spelling of 561515100050 in words is "five hundred sixty-one billion, five hundred fifteen million, one hundred thousand, fifty".