21404433361260 has 24 divisors (see below), whose sum is σ = 59932413411696. Its totient is φ = 5707848896320.

The previous prime is 21404433361183. The next prime is 21404433361351. The reversal of 21404433361260 is 6216333440412.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178370277951 + ... + 178370278070.

It is an arithmetic number, because the mean of its divisors is an integer number (2497183892154).

Almost surely, 2^{21404433361260} is an apocalyptic number.

21404433361260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21404433361260 is an abundant number, since it is smaller than the sum of its proper divisors (38527980050436).

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

21404433361260 is a wasteful number, since it uses less digits than its factorization.

21404433361260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356740556033 (or 356740556031 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 39.

The spelling of 21404433361260 in words is "twenty-one trillion, four hundred four billion, four hundred thirty-three million, three hundred sixty-one thousand, two hundred sixty".