914642516221 has 4 divisors (see below), whose sum is σ = 1045305732832. Its totient is φ = 783979299612.

The previous prime is 914642516191. The next prime is 914642516267. The reversal of 914642516221 is 122615246419.

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 914642516221 - 2⁵ = 914642516189 is a prime.

It is a super-3 number, since 3×914642516221³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (914642516521) 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, 65331608295 + ... + 65331608308.

It is an arithmetic number, because the mean of its divisors is an integer number (261326433208).

Almost surely, 2^914642516221 is an apocalyptic number.

It is an amenable number.

914642516221 is a deficient number, since it is larger than the sum of its proper divisors (130663216611).

914642516221 is a wasteful number, since it uses less digits than its factorization.

914642516221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130663216610.

The product of its digits is 207360, while the sum is 43.

The spelling of 914642516221 in words is "nine hundred fourteen billion, six hundred forty-two million, five hundred sixteen thousand, two hundred twenty-one".