26542450818 has 60 divisors (see below), whose sum is σ = 64401719778. Its totient is φ = 8166899520.

The previous prime is 26542450813. The next prime is 26542450819. The reversal of 26542450818 is 81805424562.

26542450818 is a `hidden beast` number, since 26 + 542 + 4 + 5 + 0 + 81 + 8 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 22006832409 + 4535618409 = 148347^2 + 67347^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26542450813) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 457363 + ... + 512118.

Almost surely, 2^26542450818 is an apocalyptic number.

26542450818 is an abundant number, since it is smaller than the sum of its proper divisors (37859268960).

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

26542450818 is a wasteful number, since it uses less digits than its factorization.

26542450818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969521 (or 969499 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 45.

The spelling of 26542450818 in words is "twenty-six billion, five hundred forty-two million, four hundred fifty thousand, eight hundred eighteen".