26488505820 has 48 divisors (see below), whose sum is σ = 84763219968. Its totient is φ = 6054515520.

The previous prime is 26488505801. The next prime is 26488505833. The reversal of 26488505820 is 2850588462.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 26488505820.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31533516 + ... + 31534355.

It is an arithmetic number, because the mean of its divisors is an integer number (1765900416).

Almost surely, 2^26488505820 is an apocalyptic number.

26488505820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26488505820 is an abundant number, since it is smaller than the sum of its proper divisors (58274714148).

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

26488505820 is a wasteful number, since it uses less digits than its factorization.

26488505820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63067890 (or 63067888 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 48.

The spelling of 26488505820 in words is "twenty-six billion, four hundred eighty-eight million, five hundred five thousand, eight hundred twenty".