16006557087 has 24 divisors (see below), whose sum is σ = 24995234160. Its totient is φ = 9836173440.

The previous prime is 16006557029. The next prime is 16006557139. The reversal of 16006557087 is 78075560061.

16006557087 is a `hidden beast` number, since 16 + 0 + 0 + 6 + 557 + 0 + 87 = 666.

It is not a de Polignac number, because 16006557087 - 2¹⁴ = 16006540703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16006557487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1258614 + ... + 1271267.

It is an arithmetic number, because the mean of its divisors is an integer number (1041468090).

Almost surely, 2^16006557087 is an apocalyptic number.

16006557087 is a deficient number, since it is larger than the sum of its proper divisors (8988677073).

16006557087 is a wasteful number, since it uses less digits than its factorization.

16006557087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2529943 (or 2529940 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 45.

The spelling of 16006557087 in words is "sixteen billion, six million, five hundred fifty-seven thousand, eighty-seven".