16121364733 has 8 divisors (see below), whose sum is σ = 16171155000. Its totient is φ = 16071618048.

The previous prime is 16121364719. The next prime is 16121364793. The reversal of 16121364733 is 33746312161.

It can be written as a sum of positive squares in 4 ways, for example, as 401721849 + 15719642884 = 20043^2 + 125378^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16121364733 - 2¹³ = 16121356541 is a prime.

It is a super-2 number, since 2×16121364733² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16121364692 and 16121364701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16121364703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 827893 + ... + 847141.

It is an arithmetic number, because the mean of its divisors is an integer number (2021394375).

Almost surely, 2^16121364733 is an apocalyptic number.

It is an amenable number.

16121364733 is a deficient number, since it is larger than the sum of its proper divisors (49790267).

16121364733 is a wasteful number, since it uses less digits than its factorization.

16121364733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21791.

The product of its digits is 54432, while the sum is 37.

Adding to 16121364733 its reverse (33746312161), we get a palindrome (49867676894).

The spelling of 16121364733 in words is "sixteen billion, one hundred twenty-one million, three hundred sixty-four thousand, seven hundred thirty-three".