16157771026929 has 27 divisors (see below), whose sum is σ = 27149593835403. Its totient is φ = 9232963779312.

The previous prime is 16157771026921. The next prime is 16157771026931. The reversal of 16157771026929 is 92962017775161.

The square root of 16157771026929 is 4019673.

It is a perfect power (a square), and thus also a powerful number.

16157771026929 is a `hidden beast` number, since 1 + 6 + 1 + 577 + 7 + 10 + 26 + 9 + 29 = 666.

16157771026929 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3801505565025 + 12356265461904 = 1949745^2 + 3515148^2 .

It is not a de Polignac number, because 16157771026929 - 2³ = 16157771026921 is a prime.

It is a super-2 number, since 2×16157771026929² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16157771026921) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 84317427 + ... + 84508839.

Almost surely, 2^{16157771026929} is an apocalyptic number.

16157771026929 is the 4019673-rd square number.

16157771026929 is the 2009837-th centered octagonal number.

It is an amenable number.

16157771026929 is a deficient number, since it is larger than the sum of its proper divisors (10991822808474).

16157771026929 is an frugal number, since it uses more digits than its factorization.

16157771026929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382846 (or 191423 counting only the distinct ones).

The product of its (nonzero) digits is 20003760, while the sum is 63.

The spelling of 16157771026929 in words is "sixteen trillion, one hundred fifty-seven billion, seven hundred seventy-one million, twenty-six thousand, nine hundred twenty-nine".