26178346340 has 24 divisors (see below), whose sum is σ = 55375807032. Its totient is φ = 10394904320.

The previous prime is 26178346331. The next prime is 26178346349. The reversal of 26178346340 is 4364387162.

It is an interprime number because it is at equal distance from previous prime (26178346331) and next prime (26178346349).

It can be written as a sum of positive squares in 4 ways, for example, as 143233024 + 26035113316 = 11968^2 + 161354^2 .

It is a junction number, because it is equal to n+sod(n) for n = 26178346291 and 26178346300.

It is not an unprimeable number, because it can be changed into a prime (26178346349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4774331 + ... + 4779810.

It is an arithmetic number, because the mean of its divisors is an integer number (2307325293).

Almost surely, 2^26178346340 is an apocalyptic number.

26178346340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26178346340 is an abundant number, since it is smaller than the sum of its proper divisors (29197460692).

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

26178346340 is a wasteful number, since it uses less digits than its factorization.

26178346340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9554287 (or 9554285 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 44.

The spelling of 26178346340 in words is "twenty-six billion, one hundred seventy-eight million, three hundred forty-six thousand, three hundred forty".