26220691040 has 48 divisors (see below), whose sum is σ = 64082476080. Its totient is φ = 10126609920.

The previous prime is 26220691039. The next prime is 26220691043. The reversal of 26220691040 is 4019602262.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 26220690988 and 26220691006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26220691043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2820866 + ... + 2830145.

It is an arithmetic number, because the mean of its divisors is an integer number (1335051585).

Almost surely, 2^26220691040 is an apocalyptic number.

26220691040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26220691040 is an abundant number, since it is smaller than the sum of its proper divisors (37861785040).

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

26220691040 is a wasteful number, since it uses less digits than its factorization.

26220691040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5651055 (or 5651047 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 26220691040 in words is "twenty-six billion, two hundred twenty million, six hundred ninety-one thousand, forty".