21340414191 has 8 divisors (see below), whose sum is σ = 28461939840. Its totient is φ = 14222915672.

The previous prime is 21340414171. The next prime is 21340414241. The reversal of 21340414191 is 19141404312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21340414191 - 2⁵ = 21340414159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21340414171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 994395 + ... + 1015628.

It is an arithmetic number, because the mean of its divisors is an integer number (3557742480).

Almost surely, 2^21340414191 is an apocalyptic number.

21340414191 is a deficient number, since it is larger than the sum of its proper divisors (7121525649).

21340414191 is a wasteful number, since it uses less digits than its factorization.

21340414191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013565.

The product of its (nonzero) digits is 3456, while the sum is 30.

The spelling of 21340414191 in words is "twenty-one billion, three hundred forty million, four hundred fourteen thousand, one hundred ninety-one".