21876263371 has 2 divisors, whose sum is σ = 21876263372. Its totient is φ = 21876263370.

The previous prime is 21876263369. The next prime is 21876263389. The reversal of 21876263371 is 17336267812.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21876263371 - 2¹ = 21876263369 is a prime.

Together with 21876263369, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (21876263341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10938131685 + 10938131686.

It is an arithmetic number, because the mean of its divisors is an integer number (10938131686).

Almost surely, 2^21876263371 is an apocalyptic number.

21876263371 is a deficient number, since it is larger than the sum of its proper divisors (1).

21876263371 is an equidigital number, since it uses as much as digits as its factorization.

21876263371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 46.

The spelling of 21876263371 in words is "twenty-one billion, eight hundred seventy-six million, two hundred sixty-three thousand, three hundred seventy-one".