16112540420461 has 4 divisors (see below), whose sum is σ = 16112617725532. Its totient is φ = 16112463115392.

The previous prime is 16112540420441. The next prime is 16112540420521. The reversal of 16112540420461 is 16402404521161.

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 15669009728100 + 443530692361 = 3958410^2 + 665981^2 .

It is a cyclic number.

It is not a de Polignac number, because 16112540420461 - 2³³ = 16103950485869 is a prime.

It is a super-2 number, since 2×16112540420461² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16112540420461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16112540420441) 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, 38339046 + ... + 38757031.

It is an arithmetic number, because the mean of its divisors is an integer number (4028154431383).

Almost surely, 2^{16112540420461} is an apocalyptic number.

It is an amenable number.

16112540420461 is a deficient number, since it is larger than the sum of its proper divisors (77305071).

16112540420461 is an equidigital number, since it uses as much as digits as its factorization.

16112540420461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77305070.

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 16112540420461 in words is "sixteen trillion, one hundred twelve billion, five hundred forty million, four hundred twenty thousand, four hundred sixty-one".