21470026650617 has 8 divisors (see below), whose sum is σ = 22246369777800. Its totient is φ = 20696083348864.

The previous prime is 21470026650607. The next prime is 21470026650659. The reversal of 21470026650617 is 71605662007412.

It can be written as a sum of positive squares in 4 ways, for example, as 1739275641856 + 19730751008761 = 1318816^2 + 4441931^2 .

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 21470026650617 - 2⁸ = 21470026650361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21470026650607) 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, 599938142 + ... + 599973927.

It is an arithmetic number, because the mean of its divisors is an integer number (2780796222225).

Almost surely, 2^{21470026650617} is an apocalyptic number.

It is an amenable number.

21470026650617 is a deficient number, since it is larger than the sum of its proper divisors (776343127183).

21470026650617 is a wasteful number, since it uses less digits than its factorization.

21470026650617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199912715.

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 21470026650617 in words is "twenty-one trillion, four hundred seventy billion, twenty-six million, six hundred fifty thousand, six hundred seventeen".