16451457475775 has 24 divisors (see below), whose sum is σ = 23633436229344. Its totient is φ = 11126465164800.

The previous prime is 16451457475763. The next prime is 16451457475777. The reversal of 16451457475775 is 57757475415461.

It is not a de Polignac number, because 16451457475775 - 2¹² = 16451457471679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16451457475777) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 643879886 + ... + 643905435.

It is an arithmetic number, because the mean of its divisors is an integer number (984726509556).

Almost surely, 2^{16451457475775} is an apocalyptic number.

16451457475775 is a deficient number, since it is larger than the sum of its proper divisors (7181978753569).

16451457475775 is a wasteful number, since it uses less digits than its factorization.

16451457475775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287785411 (or 1287785406 counting only the distinct ones).

The product of its digits is 576240000, while the sum is 68.

The spelling of 16451457475775 in words is "sixteen trillion, four hundred fifty-one billion, four hundred fifty-seven million, four hundred seventy-five thousand, seven hundred seventy-five".