26729005920 has 96 divisors (see below), whose sum is σ = 84384568800. Its totient is φ = 7111802880.

The previous prime is 26729005909. The next prime is 26729005949. The reversal of 26729005920 is 2950092762.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153510 + ... + 277530.

It is an arithmetic number, because the mean of its divisors is an integer number (879005925).

Almost surely, 2^26729005920 is an apocalyptic number.

26729005920 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 26729005920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42192284400).

26729005920 is an abundant number, since it is smaller than the sum of its proper divisors (57655562880).

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

26729005920 is a wasteful number, since it uses less digits than its factorization.

26729005920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124488 (or 124480 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 26729005920 in words is "twenty-six billion, seven hundred twenty-nine million, five thousand, nine hundred twenty".