16165680687456 has 48 divisors (see below), whose sum is σ = 43469909664048. Its totient is φ = 5257131929600.

The previous prime is 16165680687433. The next prime is 16165680687493. The reversal of 16165680687456 is 65478608656161.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×16165680687456² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2053563225 + ... + 2053571096.

It is an arithmetic number, because the mean of its divisors is an integer number (905623118001).

Almost surely, 2^{16165680687456} is an apocalyptic number.

16165680687456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16165680687456 is an abundant number, since it is smaller than the sum of its proper divisors (27304228976592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16165680687456 is a wasteful number, since it uses less digits than its factorization.

16165680687456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4107134375 (or 4107134367 counting only the distinct ones).

The product of its (nonzero) digits is 348364800, while the sum is 69.

The spelling of 16165680687456 in words is "sixteen trillion, one hundred sixty-five billion, six hundred eighty million, six hundred eighty-seven thousand, four hundred fifty-six".