16162587113261 has 4 divisors (see below), whose sum is σ = 16172557865724. Its totient is φ = 16152616360800.

The previous prime is 16162587113249. The next prime is 16162587113347. The reversal of 16162587113261 is 16231178526161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10829489690761 + 5333097422500 = 3290819^2 + 2309350^2 .

It is a cyclic number.

It is not a de Polignac number, because 16162587113261 - 2³⁴ = 16145407244077 is a prime.

It is a super-2 number, since 2×16162587113261² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16162587113221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4985373800 + ... + 4985377041.

It is an arithmetic number, because the mean of its divisors is an integer number (4043139466431).

Almost surely, 2^{16162587113261} is an apocalyptic number.

It is an amenable number.

16162587113261 is a deficient number, since it is larger than the sum of its proper divisors (9970752463).

16162587113261 is an equidigital number, since it uses as much as digits as its factorization.

16162587113261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9970752462.

The product of its digits is 725760, while the sum is 50.

The spelling of 16162587113261 in words is "sixteen trillion, one hundred sixty-two billion, five hundred eighty-seven million, one hundred thirteen thousand, two hundred sixty-one".