16001433112621 has 8 divisors (see below), whose sum is σ = 17457427346688. Its totient is φ = 14545658628000.

The previous prime is 16001433112619. The next prime is 16001433112673. The reversal of 16001433112621 is 12621133410061.

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 16001433112621 - 2¹ = 16001433112619 is a prime.

It is a super-4 number, since 4×16001433112621⁴ (a number of 54 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16001433112121) 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, 54785085 + ... + 55076386.

It is an arithmetic number, because the mean of its divisors is an integer number (2182178418336).

Almost surely, 2^{16001433112621} is an apocalyptic number.

16001433112621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16001433112621 is a deficient number, since it is larger than the sum of its proper divisors (1455994234067).

16001433112621 is a wasteful number, since it uses less digits than its factorization.

16001433112621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109874723.

The product of its (nonzero) digits is 5184, while the sum is 31.

Adding to 16001433112621 its reverse (12621133410061), we get a palindrome (28622566522682).

The spelling of 16001433112621 in words is "sixteen trillion, one billion, four hundred thirty-three million, one hundred twelve thousand, six hundred twenty-one".