2561415561006 has 16 divisors (see below), whose sum is σ = 5123009596800. Its totient is φ = 853775441208.

The previous prime is 2561415560971. The next prime is 2561415561043. The reversal of 2561415561006 is 6001655141652.

It is a congruent number.

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, 7249516 + ... + 7594623.

It is an arithmetic number, because the mean of its divisors is an integer number (320188099800).

Almost surely, 2^{2561415561006} is an apocalyptic number.

2561415561006 is an abundant number, since it is smaller than the sum of its proper divisors (2561594035794).

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

2561415561006 is a wasteful number, since it uses less digits than its factorization.

2561415561006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14872903.

The product of its (nonzero) digits is 216000, while the sum is 42.

The spelling of 2561415561006 in words is "two trillion, five hundred sixty-one billion, four hundred fifteen million, five hundred sixty-one thousand, six".