26489064816 has 30 divisors (see below), whose sum is σ = 74132591520. Its totient is φ = 8829688224.

The previous prime is 26489064799. The next prime is 26489064821. The reversal of 26489064816 is 61846098462.

26489064816 is a `hidden beast` number, since 26 + 489 + 0 + 64 + 81 + 6 = 666.

It is a super-2 number, since 2×26489064816² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 91975776 + ... + 91976063.

It is an arithmetic number, because the mean of its divisors is an integer number (2471086384).

Almost surely, 2^26489064816 is an apocalyptic number.

It is an amenable number.

26489064816 is an abundant number, since it is smaller than the sum of its proper divisors (47643526704).

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

26489064816 is a wasteful number, since it uses less digits than its factorization.

26489064816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183951853 (or 183951844 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 54.

The spelling of 26489064816 in words is "twenty-six billion, four hundred eighty-nine million, sixty-four thousand, eight hundred sixteen".