16151811358681 has 16 divisors (see below), whose sum is σ = 16584500784384. Its totient is φ = 15722969282944.

The previous prime is 16151811358637. The next prime is 16151811358703. The reversal of 16151811358681 is 18685311815161.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 16151811358681 - 2¹³ = 16151811350489 is a prime.

It is a super-2 number, since 2×16151811358681² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16151811358621) 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, 10060461 + ... + 11554933.

It is an arithmetic number, because the mean of its divisors is an integer number (1036531299024).

Almost surely, 2^{16151811358681} is an apocalyptic number.

It is an amenable number.

16151811358681 is a deficient number, since it is larger than the sum of its proper divisors (432689425703).

16151811358681 is a wasteful number, since it uses less digits than its factorization.

16151811358681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495760.

The product of its digits is 1382400, while the sum is 55.

The spelling of 16151811358681 in words is "sixteen trillion, one hundred fifty-one billion, eight hundred eleven million, three hundred fifty-eight thousand, six hundred eighty-one".