16007202081 has 24 divisors (see below), whose sum is σ = 24997026600. Its totient is φ = 9812238336.

The previous prime is 16007202073. The next prime is 16007202119. The reversal of 16007202081 is 18020270061.

It can be written as a sum of positive squares in 4 ways, for example, as 8361273600 + 7645928481 = 91440^2 + 87441^2 .

It is not a de Polignac number, because 16007202081 - 2³ = 16007202073 is a prime.

It is a super-2 number, since 2×16007202081² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16007202481) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 236106 + ... + 296243.

It is an arithmetic number, because the mean of its divisors is an integer number (1041542775).

Almost surely, 2^16007202081 is an apocalyptic number.

It is an amenable number.

16007202081 is a deficient number, since it is larger than the sum of its proper divisors (8989824519).

16007202081 is a wasteful number, since it uses less digits than its factorization.

16007202081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532625 (or 532622 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The spelling of 16007202081 in words is "sixteen billion, seven million, two hundred two thousand, eighty-one".