16156622253265 has 16 divisors (see below), whose sum is σ = 21599304022800. Its totient is φ = 11519628809472.

The previous prime is 16156622253241. The next prime is 16156622253269. The reversal of 16156622253265 is 56235222665161.

It can be written as a sum of positive squares in 8 ways, for example, as 77452559809 + 16079169693456 = 278303^2 + 4009884^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16156622253265 is a prime.

It is a super-2 number, since 2×16156622253265² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16156622253269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4285574310 + ... + 4285578079.

It is an arithmetic number, because the mean of its divisors is an integer number (1349956501425).

Almost surely, 2^{16156622253265} is an apocalyptic number.

It is an amenable number.

16156622253265 is a deficient number, since it is larger than the sum of its proper divisors (5442681769535).

16156622253265 is a wasteful number, since it uses less digits than its factorization.

16156622253265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8571152436.

The product of its digits is 7776000, while the sum is 52.

The spelling of 16156622253265 in words is "sixteen trillion, one hundred fifty-six billion, six hundred twenty-two million, two hundred fifty-three thousand, two hundred sixty-five".