21676950951 has 8 divisors (see below), whose sum is σ = 28903321200. Its totient is φ = 14450940672.

The previous prime is 21676950949. The next prime is 21676951019. The reversal of 21676950951 is 15905967612.

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

It is not a de Polignac number, because 21676950951 - 2¹ = 21676950949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21676950894 and 21676950903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21676950901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121581 + ... + 241113.

It is an arithmetic number, because the mean of its divisors is an integer number (3612915150).

Almost surely, 2^21676950951 is an apocalyptic number.

21676950951 is a deficient number, since it is larger than the sum of its proper divisors (7226370249).

21676950951 is a wasteful number, since it uses less digits than its factorization.

21676950951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179985.

The product of its (nonzero) digits is 1020600, while the sum is 51.

The spelling of 21676950951 in words is "twenty-one billion, six hundred seventy-six million, nine hundred fifty thousand, nine hundred fifty-one".