1827162505561 has 8 divisors (see below), whose sum is σ = 1841606958080. Its totient is φ = 1812718949328.

The previous prime is 1827162505537. The next prime is 1827162505573. The reversal of 1827162505561 is 1655052617281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1827162505561 - 2⁵ = 1827162505529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1827162575561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4215415 + ... + 4628611.

It is an arithmetic number, because the mean of its divisors is an integer number (230200869760).

Almost surely, 2^{1827162505561} is an apocalyptic number.

It is an amenable number.

1827162505561 is a deficient number, since it is larger than the sum of its proper divisors (14444452519).

1827162505561 is a wasteful number, since it uses less digits than its factorization.

1827162505561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448143.

The product of its (nonzero) digits is 1008000, while the sum is 49.

The spelling of 1827162505561 in words is "one trillion, eight hundred twenty-seven billion, one hundred sixty-two million, five hundred five thousand, five hundred sixty-one".