16529613428 has 6 divisors (see below), whose sum is σ = 28926823506. Its totient is φ = 8264806712.

The previous prime is 16529613403. The next prime is 16529613431. The reversal of 16529613428 is 82431692561.

It can be written as a sum of positive squares in only one way, i.e., 11659248484 + 4870364944 = 107978^2 + 69788^2 .

It is a super-3 number, since 3×16529613428³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2066201675 + ... + 2066201682.

It is an arithmetic number, because the mean of its divisors is an integer number (4821137251).

Almost surely, 2^16529613428 is an apocalyptic number.

It is an amenable number.

16529613428 is a deficient number, since it is larger than the sum of its proper divisors (12397210078).

16529613428 is a wasteful number, since it uses less digits than its factorization.

16529613428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4132403361 (or 4132403359 counting only the distinct ones).

The product of its digits is 622080, while the sum is 47.

The spelling of 16529613428 in words is "sixteen billion, five hundred twenty-nine million, six hundred thirteen thousand, four hundred twenty-eight".