561056001090 has 64 divisors (see below), whose sum is σ = 1451249049600. Its totient is φ = 137997990144.

The previous prime is 561056001089. The next prime is 561056001101. The reversal of 561056001090 is 90100650165.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63585 + ... + 1061204.

It is an arithmetic number, because the mean of its divisors is an integer number (22675766400).

Almost surely, 2^561056001090 is an apocalyptic number.

561056001090 is an abundant number, since it is smaller than the sum of its proper divisors (890193048510).

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

561056001090 is a wasteful number, since it uses less digits than its factorization.

561056001090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126091.

The product of its (nonzero) digits is 8100, while the sum is 33.

The spelling of 561056001090 in words is "five hundred sixty-one billion, fifty-six million, one thousand, ninety".