16156465651 has 4 divisors (see below), whose sum is σ = 16172415792. Its totient is φ = 16140515512.

The previous prime is 16156465609. The next prime is 16156465727. The reversal of 16156465651 is 15656465161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15656465161 = 29 ⋅539878109.

It is a cyclic number.

It is not a de Polignac number, because 16156465651 - 2¹⁹ = 16155941363 is a prime.

It is a super-2 number, since 2×16156465651² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (16156465051) 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, 7973551 + ... + 7975576.

It is an arithmetic number, because the mean of its divisors is an integer number (4043103948).

Almost surely, 2^16156465651 is an apocalyptic number.

16156465651 is a deficient number, since it is larger than the sum of its proper divisors (15950141).

16156465651 is a wasteful number, since it uses less digits than its factorization.

16156465651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15950140.

The product of its digits is 648000, while the sum is 46.

The spelling of 16156465651 in words is "sixteen billion, one hundred fifty-six million, four hundred sixty-five thousand, six hundred fifty-one".