16122070061 has 4 divisors (see below), whose sum is σ = 16515291324. Its totient is φ = 15728848800.

The previous prime is 16122070033. The next prime is 16122070067. The reversal of 16122070061 is 16007022161.

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 1108224100 + 15013845961 = 33290^2 + 122531^2 .

It is a cyclic number.

It is not a de Polignac number, because 16122070061 - 2¹⁸ = 16121807917 is a prime.

It is a super-2 number, since 2×16122070061² (a number of 21 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 16122070061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16122070067) 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, 196610570 + ... + 196610651.

It is an arithmetic number, because the mean of its divisors is an integer number (4128822831).

Almost surely, 2^16122070061 is an apocalyptic number.

It is an amenable number.

16122070061 is a deficient number, since it is larger than the sum of its proper divisors (393221263).

16122070061 is an equidigital number, since it uses as much as digits as its factorization.

16122070061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393221262.

The product of its (nonzero) digits is 1008, while the sum is 26.

The spelling of 16122070061 in words is "sixteen billion, one hundred twenty-two million, seventy thousand, sixty-one".