16121672522 has 4 divisors (see below), whose sum is σ = 24182508786. Its totient is φ = 8060836260.

The previous prime is 16121672513. The next prime is 16121672551. The reversal of 16121672522 is 22527612161.

16121672522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13192589881 + 2929082641 = 114859^2 + 54121^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4030418129 + ... + 4030418132.

Almost surely, 2^16121672522 is an apocalyptic number.

16121672522 is a deficient number, since it is larger than the sum of its proper divisors (8060836264).

16121672522 is an equidigital number, since it uses as much as digits as its factorization.

16121672522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8060836263.

The product of its digits is 20160, while the sum is 35.

The spelling of 16121672522 in words is "sixteen billion, one hundred twenty-one million, six hundred seventy-two thousand, five hundred twenty-two".