26440854102 has 72 divisors (see below), whose sum is σ = 62614842264. Its totient is φ = 8059514112.

The previous prime is 26440854091. The next prime is 26440854107. The reversal of 26440854102 is 20145804462.

26440854102 is a `hidden beast` number, since 2 + 644 + 0 + 8 + 5 + 4 + 1 + 0 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26440854107) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 284878 + ... + 366110.

It is an arithmetic number, because the mean of its divisors is an integer number (869650587).

Almost surely, 2^26440854102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26440854102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31307421132).

26440854102 is an abundant number, since it is smaller than the sum of its proper divisors (36173988162).

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

26440854102 is a wasteful number, since it uses less digits than its factorization.

26440854102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81374 (or 81358 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The spelling of 26440854102 in words is "twenty-six billion, four hundred forty million, eight hundred fifty-four thousand, one hundred two".