266038421000 has 64 divisors (see below), whose sum is σ = 679123560960. Its totient is φ = 96741240000.

The previous prime is 266038420933. The next prime is 266038421003. The reversal of 266038421000 is 124830662.

It is not an unprimeable number, because it can be changed into a prime (266038421003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12081656 + ... + 12103655.

It is an arithmetic number, because the mean of its divisors is an integer number (10611305640).

Almost surely, 2^266038421000 is an apocalyptic number.

266038421000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266038421000 is an abundant number, since it is smaller than the sum of its proper divisors (413085139960).

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

266038421000 is a wasteful number, since it uses less digits than its factorization.

266038421000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24185343 (or 24185329 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 266038421000 in words is "two hundred sixty-six billion, thirty-eight million, four hundred twenty-one thousand".