21880330671 has 8 divisors (see below), whose sum is σ = 29267581824. Its totient is φ = 14539983320.

The previous prime is 21880330649. The next prime is 21880330679. The reversal of 21880330671 is 17603308812.

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 21880330671 - 2⁹ = 21880330159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21880330679) 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, 11724861 + ... + 11726726.

It is an arithmetic number, because the mean of its divisors is an integer number (3658447728).

Almost surely, 2^21880330671 is an apocalyptic number.

21880330671 is a deficient number, since it is larger than the sum of its proper divisors (7387251153).

21880330671 is a wasteful number, since it uses less digits than its factorization.

21880330671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23451901.

The product of its (nonzero) digits is 48384, while the sum is 39.

The spelling of 21880330671 in words is "twenty-one billion, eight hundred eighty million, three hundred thirty thousand, six hundred seventy-one".