26105915156 has 24 divisors (see below), whose sum is σ = 48393545256. Its totient is φ = 12279848960.

The previous prime is 26105915123. The next prime is 26105915177. The reversal of 26105915156 is 65151950162.

It can be written as a sum of positive squares in 4 ways, for example, as 6227735056 + 19878180100 = 78916^2 + 140990^2 .

It is a super-2 number, since 2×26105915156² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78836 + ... + 241716.

It is an arithmetic number, because the mean of its divisors is an integer number (2016397719).

Almost surely, 2^26105915156 is an apocalyptic number.

It is an amenable number.

26105915156 is a deficient number, since it is larger than the sum of its proper divisors (22287630100).

26105915156 is a wasteful number, since it uses less digits than its factorization.

26105915156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165259 (or 165257 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 41.

The spelling of 26105915156 in words is "twenty-six billion, one hundred five million, nine hundred fifteen thousand, one hundred fifty-six".