16121653420 has 48 divisors (see below), whose sum is σ = 34514605440. Its totient is φ = 6323256576.

The previous prime is 16121653363. The next prime is 16121653423. The reversal of 16121653420 is 2435612161.

It is a happy number.

16121653420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (16121653423) 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, 2401789 + ... + 2408491.

It is an arithmetic number, because the mean of its divisors is an integer number (719054280).

Almost surely, 2^16121653420 is an apocalyptic number.

16121653420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16121653420 is an abundant number, since it is smaller than the sum of its proper divisors (18392952020).

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

16121653420 is a wasteful number, since it uses less digits than its factorization.

16121653420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9034 (or 9032 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 16121653420 in words is "sixteen billion, one hundred twenty-one million, six hundred fifty-three thousand, four hundred twenty".