26651761320 has 256 divisors, whose sum is σ = 86780160000. Its totient is φ = 6527001600.

The previous prime is 26651761309. The next prime is 26651761321. The reversal of 26651761320 is 2316715662.

It is not an unprimeable number, because it can be changed into a prime (26651761321) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9873331 + ... + 9876029.

It is an arithmetic number, because the mean of its divisors is an integer number (338985000).

Almost surely, 2^26651761320 is an apocalyptic number.

26651761320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26651761320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43390080000).

26651761320 is an abundant number, since it is smaller than the sum of its proper divisors (60128398680).

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

26651761320 is a wasteful number, since it uses less digits than its factorization.

26651761320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2864 (or 2860 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The spelling of 26651761320 in words is "twenty-six billion, six hundred fifty-one million, seven hundred sixty-one thousand, three hundred twenty".