16121776524 has 24 divisors (see below), whose sum is σ = 42991404288. Its totient is φ = 4606221840.

The previous prime is 16121776523. The next prime is 16121776547. The reversal of 16121776524 is 42567712161.

16121776524 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (16121776523) 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 7 ways as a sum of consecutive naturals, for example, 95962872 + ... + 95963039.

It is an arithmetic number, because the mean of its divisors is an integer number (1791308512).

Almost surely, 2^16121776524 is an apocalyptic number.

16121776524 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16121776524 is an abundant number, since it is smaller than the sum of its proper divisors (26869627764).

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

16121776524 is a wasteful number, since it uses less digits than its factorization.

16121776524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191925925 (or 191925923 counting only the distinct ones).

The product of its digits is 141120, while the sum is 42.

The spelling of 16121776524 in words is "sixteen billion, one hundred twenty-one million, seven hundred seventy-six thousand, five hundred twenty-four".