26530866054 has 144 divisors (see below), whose sum is σ = 74727905616. Its totient is φ = 6722956800.

The previous prime is 26530866053. The next prime is 26530866073. The reversal of 26530866054 is 45066803562.

26530866054 is a `hidden beast` number, since 2 + 6 + 5 + 30 + 8 + 6 + 605 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26530866053) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 364434 + ... + 431130.

It is an arithmetic number, because the mean of its divisors is an integer number (518943789).

Almost surely, 2^26530866054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26530866054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37363952808).

26530866054 is an abundant number, since it is smaller than the sum of its proper divisors (48197039562).

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

26530866054 is a wasteful number, since it uses less digits than its factorization.

26530866054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66771 (or 66761 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 26530866054 in words is "twenty-six billion, five hundred thirty million, eight hundred sixty-six thousand, fifty-four".