26499960000 has 350 divisors, whose sum is σ = 98173308860. Its totient is φ = 7065792000.

The previous prime is 26499959999. The next prime is 26499960007. The reversal of 26499960000 is 6999462.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (26499960007) by changing a digit.

It is a polite number, since it can be written in 49 ways as a sum of consecutive naturals, for example, 3235911 + ... + 3244089.

Almost surely, 2^26499960000 is an apocalyptic number.

26499960000 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 26499960000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49086654430).

26499960000 is an abundant number, since it is smaller than the sum of its proper divisors (71673348860).

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

26499960000 is an frugal number, since it uses more digits than its factorization.

26499960000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8223 (or 8189 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The spelling of 26499960000 in words is "twenty-six billion, four hundred ninety-nine million, nine hundred sixty thousand".