26180240687 has 16 divisors (see below), whose sum is σ = 27043806720. Its totient is φ = 25331315328.

The previous prime is 26180240641. The next prime is 26180240689. The reversal of 26180240687 is 78604208162.

It is a cyclic number.

It is not a de Polignac number, because 26180240687 - 2¹⁰ = 26180239663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26180240689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7022618 + ... + 7026344.

It is an arithmetic number, because the mean of its divisors is an integer number (1690237920).

Almost surely, 2^26180240687 is an apocalyptic number.

26180240687 is a deficient number, since it is larger than the sum of its proper divisors (863566033).

26180240687 is a wasteful number, since it uses less digits than its factorization.

26180240687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5630.

The product of its (nonzero) digits is 258048, while the sum is 44.

The spelling of 26180240687 in words is "twenty-six billion, one hundred eighty million, two hundred forty thousand, six hundred eighty-seven".