16121435064 has 64 divisors (see below), whose sum is σ = 46104844800. Its totient is φ = 4601764224.

The previous prime is 16121435063. The next prime is 16121435093. The reversal of 16121435064 is 46053412161.

16121435064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16121435063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134709 + ... + 224475.

It is an arithmetic number, because the mean of its divisors is an integer number (720388200).

Almost surely, 2^16121435064 is an apocalyptic number.

16121435064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16121435064 is an abundant number, since it is smaller than the sum of its proper divisors (29983409736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16121435064 is a wasteful number, since it uses less digits than its factorization.

16121435064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90852 (or 90848 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 16121435064 in words is "sixteen billion, one hundred twenty-one million, four hundred thirty-five thousand, sixty-four".