26321864541984 has 144 divisors (see below), whose sum is σ = 81659517043104. Its totient is φ = 7976135577600.

The previous prime is 26321864541983. The next prime is 26321864541989. The reversal of 26321864541984 is 48914546812362.

26321864541984 is a `hidden beast` number, since 2 + 6 + 3 + 2 + 1 + 8 + 6 + 4 + 541 + 9 + 84 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (26321864541983) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 199749399 + ... + 199881129.

It is an arithmetic number, because the mean of its divisors is an integer number (567079979466).

Almost surely, 2^{26321864541984} is an apocalyptic number.

26321864541984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

26321864541984 is an abundant number, since it is smaller than the sum of its proper divisors (55337652501120).

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

26321864541984 is a wasteful number, since it uses less digits than its factorization.

26321864541984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194831 (or 194820 counting only the distinct ones).

The product of its digits is 79626240, while the sum is 63.

The spelling of 26321864541984 in words is "twenty-six trillion, three hundred twenty-one billion, eight hundred sixty-four million, five hundred forty-one thousand, nine hundred eighty-four".