21362838275 has 24 divisors (see below), whose sum is σ = 26734717440. Its totient is φ = 16932706560.

The previous prime is 21362838257. The next prime is 21362838281. The reversal of 21362838275 is 57283826312.

It is a de Polignac number, because none of the positive numbers 2^k-21362838275 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2564417 + ... + 2572733.

It is an arithmetic number, because the mean of its divisors is an integer number (1113946560).

Almost surely, 2^21362838275 is an apocalyptic number.

21362838275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21362838275 is a deficient number, since it is larger than the sum of its proper divisors (5371879165).

21362838275 is a wasteful number, since it uses less digits than its factorization.

21362838275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9263 (or 9258 counting only the distinct ones).

The product of its digits is 967680, while the sum is 47.

The spelling of 21362838275 in words is "twenty-one billion, three hundred sixty-two million, eight hundred thirty-eight thousand, two hundred seventy-five".