21876276257 has 8 divisors (see below), whose sum is σ = 24201156672. Its totient is φ = 19607417200.

The previous prime is 21876276211. The next prime is 21876276263. The reversal of 21876276257 is 75267267812.

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 21876276257 - 2¹⁶ = 21876210721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21876276199 and 21876276208.

It is not an unprimeable number, because it can be changed into a prime (21876276157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14004518 + ... + 14006079.

It is an arithmetic number, because the mean of its divisors is an integer number (3025144584).

Almost surely, 2^21876276257 is an apocalyptic number.

It is an amenable number.

21876276257 is a deficient number, since it is larger than the sum of its proper divisors (2324880415).

21876276257 is a wasteful number, since it uses less digits than its factorization.

21876276257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28010679.

The product of its digits is 3951360, while the sum is 53.

The spelling of 21876276257 in words is "twenty-one billion, eight hundred seventy-six million, two hundred seventy-six thousand, two hundred fifty-seven".