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16020442514 = 28010221257
BaseRepresentation
bin11101110101110010…
…01000110110010010
31112100111021210122202
432322321020312102
5230302213130024
611205405403202
71105000341326
oct167271106622
945314253582
1016020442514
11688113863a
123131269502
131684092bab
14abd973986
1563b6d2bae
hex3bae48d92

16020442514 has 4 divisors (see below), whose sum is σ = 24030663774. Its totient is φ = 8010221256.

The previous prime is 16020442511. The next prime is 16020442583. The reversal of 16020442514 is 41524402061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41524402061 = 51517806033.

It can be written as a sum of positive squares in only one way, i.e., 8158605625 + 7861836889 = 90325^2 + 88667^2 .

It is not an unprimeable number, because it can be changed into a prime (16020442511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4005110627 + ... + 4005110630.

Almost surely, 216020442514 is an apocalyptic number.

16020442514 is a deficient number, since it is larger than the sum of its proper divisors (8010221260).

16020442514 is an equidigital number, since it uses as much as digits as its factorization.

16020442514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8010221259.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 16020442514 its reverse (41524402061), we get a palindrome (57544844575).

The spelling of 16020442514 in words is "sixteen billion, twenty million, four hundred forty-two thousand, five hundred fourteen".

Divisors: 1 2 8010221257 16020442514