16100116621 has 12 divisors (see below), whose sum is σ = 16999390944. Its totient is φ = 15246189000.

The previous prime is 16100116601. The next prime is 16100116649. The reversal of 16100116621 is 12661100161.

It is not a de Polignac number, because 16100116621 - 2¹¹ = 16100114573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16100116601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 970446 + ... + 986896.

It is an arithmetic number, because the mean of its divisors is an integer number (1416615912).

Almost surely, 2^16100116621 is an apocalyptic number.

It is an amenable number.

16100116621 is a deficient number, since it is larger than the sum of its proper divisors (899274323).

16100116621 is a wasteful number, since it uses less digits than its factorization.

16100116621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19200 (or 19181 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 25.

Adding to 16100116621 its reverse (12661100161), we get a palindrome (28761216782).

The spelling of 16100116621 in words is "sixteen billion, one hundred million, one hundred sixteen thousand, six hundred twenty-one".