26220044660800 has 42 divisors (see below), whose sum is σ = 64517697397418. Its totient is φ = 10488017863680.

The previous prime is 26220044660753. The next prime is 26220044660837. The reversal of 26220044660800 is 806644002262.

It can be written as a sum of positive squares in 3 ways, for example, as 3435002597376 + 22785042063424 = 1853376^2 + 4773368^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 8193762357 + ... + 8193765556.

Almost surely, 2^{26220044660800} is an apocalyptic number.

26220044660800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26220044660800 is an abundant number, since it is smaller than the sum of its proper divisors (38297652736618).

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

26220044660800 is a wasteful number, since it uses less digits than its factorization.

26220044660800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16387527935 (or 16387527920 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 40.

The spelling of 26220044660800 in words is "twenty-six trillion, two hundred twenty billion, forty-four million, six hundred sixty thousand, eight hundred".