16244421145 has 8 divisors (see below), whose sum is σ = 20639970504. Its totient is φ = 12231093504.

The previous prime is 16244421101. The next prime is 16244421169. The reversal of 16244421145 is 54112444261.

It can be written as a sum of positive squares in 4 ways, for example, as 5531343129 + 10713078016 = 74373^2 + 103504^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16244421145 - 2²³ = 16236032537 is a prime.

It is a super-2 number, since 2×16244421145² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16244421145.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95555334 + ... + 95555503.

It is an arithmetic number, because the mean of its divisors is an integer number (2579996313).

Almost surely, 2^16244421145 is an apocalyptic number.

It is an amenable number.

16244421145 is a deficient number, since it is larger than the sum of its proper divisors (4395549359).

16244421145 is a wasteful number, since it uses less digits than its factorization.

16244421145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191110859.

The product of its digits is 30720, while the sum is 34.

The spelling of 16244421145 in words is "sixteen billion, two hundred forty-four million, four hundred twenty-one thousand, one hundred forty-five".