26040260240 has 40 divisors (see below), whose sum is σ = 60610525440. Its totient is φ = 10404590976.

The previous prime is 26040260219. The next prime is 26040260243. The reversal of 26040260240 is 4206204062.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (26040260243) 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, 106880 + ... + 251999.

It is an arithmetic number, because the mean of its divisors is an integer number (1515263136).

Almost surely, 2^26040260240 is an apocalyptic number.

26040260240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26040260240 is an abundant number, since it is smaller than the sum of its proper divisors (34570265200).

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

26040260240 is a wasteful number, since it uses less digits than its factorization.

26040260240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359799 (or 359793 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The spelling of 26040260240 in words is "twenty-six billion, forty million, two hundred sixty thousand, two hundred forty".