163765261982 has 32 divisors (see below), whose sum is σ = 282697041600. Its totient is φ = 69696207360.

The previous prime is 163765261981. The next prime is 163765261991. The reversal of 163765261982 is 289162567361.

It is a super-2 number, since 2×163765261982² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163765261981) 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, 11042132 + ... + 11056952.

It is an arithmetic number, because the mean of its divisors is an integer number (8834282550).

Almost surely, 2^163765261982 is an apocalyptic number.

163765261982 is a deficient number, since it is larger than the sum of its proper divisors (118931779618).

163765261982 is a wasteful number, since it uses less digits than its factorization.

163765261982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20276.

The product of its digits is 6531840, while the sum is 56.

The spelling of 163765261982 in words is "one hundred sixty-three billion, seven hundred sixty-five million, two hundred sixty-one thousand, nine hundred eighty-two".