26421133500 has 96 divisors (see below), whose sum is σ = 85487088960. Its totient is φ = 7045632000.

The previous prime is 26421133489. The next prime is 26421133517. The reversal of 26421133500 is 533112462.

26421133500 is a `hidden beast` number, since 2 + 6 + 4 + 21 + 133 + 500 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 965061 + ... + 992060.

It is an arithmetic number, because the mean of its divisors is an integer number (890490510).

Almost surely, 2^26421133500 is an apocalyptic number.

26421133500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26421133500 is an abundant number, since it is smaller than the sum of its proper divisors (59065955460).

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

26421133500 is a wasteful number, since it uses less digits than its factorization.

26421133500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957149 (or 1957131 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 26421133500 its reverse (533112462), we get a palindrome (26954245962).

The spelling of 26421133500 in words is "twenty-six billion, four hundred twenty-one million, one hundred thirty-three thousand, five hundred".