26496619620 has 96 divisors (see below), whose sum is σ = 77692849920. Its totient is φ = 6734407680.

The previous prime is 26496619571. The next prime is 26496619627. The reversal of 26496619620 is 2691669462.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (26496619627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 353616 + ... + 421944.

It is an arithmetic number, because the mean of its divisors is an integer number (809300520).

Almost surely, 2^26496619620 is an apocalyptic number.

26496619620 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 26496619620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38846424960).

26496619620 is an abundant number, since it is smaller than the sum of its proper divisors (51196230300).

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

26496619620 is a wasteful number, since it uses less digits than its factorization.

26496619620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68645 (or 68643 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 51.

The spelling of 26496619620 in words is "twenty-six billion, four hundred ninety-six million, six hundred nineteen thousand, six hundred twenty".