26508942993 has 8 divisors (see below), whose sum is σ = 38064123328. Its totient is φ = 16313195664.

The previous prime is 26508942953. The next prime is 26508943001. The reversal of 26508942993 is 39924980562.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 26508942993 - 2²² = 26504748689 is a prime.

It is a super-2 number, since 2×26508942993² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26508942923) 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, 339858205 + ... + 339858282.

It is an arithmetic number, because the mean of its divisors is an integer number (4758015416).

Almost surely, 2^26508942993 is an apocalyptic number.

It is an amenable number.

26508942993 is a deficient number, since it is larger than the sum of its proper divisors (11555180335).

26508942993 is a wasteful number, since it uses less digits than its factorization.

26508942993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679716503.

The product of its (nonzero) digits is 8398080, while the sum is 57.

The spelling of 26508942993 in words is "twenty-six billion, five hundred eight million, nine hundred forty-two thousand, nine hundred ninety-three".