21374063275 has 6 divisors (see below), whose sum is σ = 26503838492. Its totient is φ = 17099250600.

The previous prime is 21374063273. The next prime is 21374063287. The reversal of 21374063275 is 57236047312.

It is not a de Polignac number, because 21374063275 - 2¹ = 21374063273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21374063273) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 427481241 + ... + 427481290.

Almost surely, 2^21374063275 is an apocalyptic number.

21374063275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21374063275 is a deficient number, since it is larger than the sum of its proper divisors (5129775217).

21374063275 is an equidigital number, since it uses as much as digits as its factorization.

21374063275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854962541 (or 854962536 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 40.

The spelling of 21374063275 in words is "twenty-one billion, three hundred seventy-four million, sixty-three thousand, two hundred seventy-five".