21460510361 has 4 divisors (see below), whose sum is σ = 21462166272. Its totient is φ = 21458854452.

The previous prime is 21460510349. The next prime is 21460510417. The reversal of 21460510361 is 16301506412.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21460510361 - 2³⁴ = 4280641177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21460512361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 808361 + ... + 834486.

It is an arithmetic number, because the mean of its divisors is an integer number (5365541568).

Almost surely, 2^21460510361 is an apocalyptic number.

It is an amenable number.

21460510361 is a deficient number, since it is larger than the sum of its proper divisors (1655911).

21460510361 is a wasteful number, since it uses less digits than its factorization.

21460510361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655910.

The product of its (nonzero) digits is 4320, while the sum is 29.

The spelling of 21460510361 in words is "twenty-one billion, four hundred sixty million, five hundred ten thousand, three hundred sixty-one".