2412091561 has 6 divisors (see below), whose sum is σ = 2651307386. Its totient is φ = 2192810400.

The previous prime is 2412091543. The next prime is 2412091571. The reversal of 2412091561 is 1651902142.

2412091561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2401490025 + 10601536 = 49005^2 + 3256^2 .

It is not a de Polignac number, because 2412091561 - 2¹⁵ = 2412058793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2412091511) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9967200 + ... + 9967441.

Almost surely, 2^2412091561 is an apocalyptic number.

It is an amenable number.

2412091561 is a deficient number, since it is larger than the sum of its proper divisors (239215825).

2412091561 is a wasteful number, since it uses less digits than its factorization.

2412091561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19934663 (or 19934652 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 2412091561 is about 49113.0487854297. The cubic root of 2412091561 is about 1341.1106039201.

The spelling of 2412091561 in words is "two billion, four hundred twelve million, ninety-one thousand, five hundred sixty-one".