26290028163 has 24 divisors (see below), whose sum is σ = 40813590528. Its totient is φ = 15009160656.

The previous prime is 26290028117. The next prime is 26290028189. The reversal of 26290028163 is 36182009262.

It is a happy number.

It is a Cunningham number, because it is equal to 162142²-1.

It is not a de Polignac number, because 26290028163 - 2⁶ = 26290028099 is a prime.

It is a super-2 number, since 2×26290028163² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (26290028263) 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, 81070 + ... + 243212.

It is an arithmetic number, because the mean of its divisors is an integer number (1700566272).

Almost surely, 2^26290028163 is an apocalyptic number.

26290028163 is a deficient number, since it is larger than the sum of its proper divisors (14523562365).

26290028163 is a wasteful number, since it uses less digits than its factorization.

26290028163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163263 (or 163256 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The spelling of 26290028163 in words is "twenty-six billion, two hundred ninety million, twenty-eight thousand, one hundred sixty-three".