21751465334 has 8 divisors (see below), whose sum is σ = 32629785600. Its totient is φ = 10874870136.

The previous prime is 21751465331. The next prime is 21751465381. The reversal of 21751465334 is 43356415712.

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

It is a junction number, because it is equal to n+sod(n) for n = 21751465291 and 21751465300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21751465331) 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, 399269 + ... + 450464.

It is an arithmetic number, because the mean of its divisors is an integer number (4078723200).

Almost surely, 2^21751465334 is an apocalyptic number.

21751465334 is a deficient number, since it is larger than the sum of its proper divisors (10878320266).

21751465334 is a wasteful number, since it uses less digits than its factorization.

21751465334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862534.

The product of its digits is 302400, while the sum is 41.

The spelling of 21751465334 in words is "twenty-one billion, seven hundred fifty-one million, four hundred sixty-five thousand, three hundred thirty-four".