16000000061 has 4 divisors (see below), whose sum is σ = 16042216800. Its totient is φ = 15957783324.

The previous prime is 16000000039. The next prime is 16000000067.

16000000061 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16000000061 - 2²² = 15995805757 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15999999982 and 16000000045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16000000067) 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, 21107801 + ... + 21108558.

It is an arithmetic number, because the mean of its divisors is an integer number (4010554200).

Almost surely, 2^16000000061 is an apocalyptic number.

It is an amenable number.

16000000061 is a deficient number, since it is larger than the sum of its proper divisors (42216739).

16000000061 is an equidigital number, since it uses as much as digits as its factorization.

16000000061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42216738.

The product of its (nonzero) digits is 36, while the sum is 14.

It can be divided in two parts, 160000000 and 61, that added together give a palindrome (160000061).

The spelling of 16000000061 in words is "sixteen billion, sixty-one", and thus it is an aban number and an uban number.