561516667040 has 48 divisors (see below), whose sum is σ = 1516095004032. Its totient is φ = 192519999744.

The previous prime is 561516667037. The next prime is 561516667079. The reversal of 561516667040 is 40766615165.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250675964 + ... + 250678203.

It is an arithmetic number, because the mean of its divisors is an integer number (31585312584).

Almost surely, 2^561516667040 is an apocalyptic number.

It is an amenable number.

561516667040 is an abundant number, since it is smaller than the sum of its proper divisors (954578336992).

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

561516667040 is a wasteful number, since it uses less digits than its factorization.

561516667040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501354189 (or 501354181 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 47.

The spelling of 561516667040 in words is "five hundred sixty-one billion, five hundred sixteen million, six hundred sixty-seven thousand, forty".