26193517842 has 16 divisors (see below), whose sum is σ = 52390938240. Its totient is φ = 8730522192.

The previous prime is 26193517841. The next prime is 26193517853. The reversal of 26193517842 is 24871539162.

It is a super-2 number, since 2×26193517842² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26193517791 and 26193517800.

It is not an unprimeable number, because it can be changed into a prime (26193517841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71418 + ... + 239765.

It is an arithmetic number, because the mean of its divisors is an integer number (3274433640).

Almost surely, 2^26193517842 is an apocalyptic number.

26193517842 is an abundant number, since it is smaller than the sum of its proper divisors (26197420398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26193517842 is a wasteful number, since it uses less digits than its factorization.

26193517842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325217.

The product of its digits is 725760, while the sum is 48.

The spelling of 26193517842 in words is "twenty-six billion, one hundred ninety-three million, five hundred seventeen thousand, eight hundred forty-two".