21983365311 has 8 divisors (see below), whose sum is σ = 29326325040. Its totient is φ = 14647991232.

The previous prime is 21983365301. The next prime is 21983365321. The reversal of 21983365311 is 11356338912.

It is an interprime number because it is at equal distance from previous prime (21983365301) and next prime (21983365321).

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

It is not a de Polignac number, because 21983365311 - 2¹⁴ = 21983348927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21983365301) 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, 1889646 + ... + 1901243.

It is an arithmetic number, because the mean of its divisors is an integer number (3665790630).

Almost surely, 2^21983365311 is an apocalyptic number.

21983365311 is a deficient number, since it is larger than the sum of its proper divisors (7342959729).

21983365311 is a wasteful number, since it uses less digits than its factorization.

21983365311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3792825.

The product of its digits is 116640, while the sum is 42.

The spelling of 21983365311 in words is "twenty-one billion, nine hundred eighty-three million, three hundred sixty-five thousand, three hundred eleven".