160863600401781 has 16 divisors (see below), whose sum is σ = 215389838880000. Its totient is φ = 106790279974848.

The previous prime is 160863600401689. The next prime is 160863600401821. The reversal of 160863600401781 is 187104006368061.

It is a happy number.

It is not a de Polignac number, because 160863600401781 - 2²⁵ = 160863566847349 is a prime.

It is a super-2 number, since 2×160863600401781² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160863600401281) 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, 48245566 + ... + 51471951.

It is an arithmetic number, because the mean of its divisors is an integer number (13461864930000).

Almost surely, 2^{160863600401781} is an apocalyptic number.

It is an amenable number.

160863600401781 is a deficient number, since it is larger than the sum of its proper divisors (54526238478219).

160863600401781 is a wasteful number, since it uses less digits than its factorization.

160863600401781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99719788.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The spelling of 160863600401781 in words is "one hundred sixty trillion, eight hundred sixty-three billion, six hundred million, four hundred one thousand, seven hundred eighty-one".