21360766241 has 8 divisors (see below), whose sum is σ = 22335275904. Its totient is φ = 20390071680.

The previous prime is 21360766213. The next prime is 21360766243. The reversal of 21360766241 is 14266706312.

It is a happy number.

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 21360766241 - 2²² = 21356571937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21360766195 and 21360766204.

It is not an unprimeable number, because it can be changed into a prime (21360766243) 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, 942320 + ... + 964721.

It is an arithmetic number, because the mean of its divisors is an integer number (2791909488).

Almost surely, 2^21360766241 is an apocalyptic number.

It is an amenable number.

21360766241 is a deficient number, since it is larger than the sum of its proper divisors (974509663).

21360766241 is a wasteful number, since it uses less digits than its factorization.

21360766241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907551.

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 21360766241 in words is "twenty-one billion, three hundred sixty million, seven hundred sixty-six thousand, two hundred forty-one".