16487064343281 has 16 divisors (see below), whose sum is σ = 25133741754368. Its totient is φ = 9417206091600.

The previous prime is 16487064343249. The next prime is 16487064343307. The reversal of 16487064343281 is 18234346078461.

It is not a de Polignac number, because 16487064343281 - 2⁵ = 16487064343249 is a prime.

It is a super-2 number, since 2×16487064343281² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16487064343781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165512905 + ... + 165612486.

It is an arithmetic number, because the mean of its divisors is an integer number (1570858859648).

Almost surely, 2^{16487064343281} is an apocalyptic number.

It is an amenable number.

16487064343281 is a deficient number, since it is larger than the sum of its proper divisors (8646677411087).

16487064343281 is a wasteful number, since it uses less digits than its factorization.

16487064343281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331127772.

The product of its (nonzero) digits is 18579456, while the sum is 57.

The spelling of 16487064343281 in words is "sixteen trillion, four hundred eighty-seven billion, sixty-four million, three hundred forty-three thousand, two hundred eighty-one".