21482148691 has 2 divisors, whose sum is σ = 21482148692. Its totient is φ = 21482148690.

The previous prime is 21482148683. The next prime is 21482148703. The reversal of 21482148691 is 19684128412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21482148691 - 2³ = 21482148683 is a prime.

It is a super-2 number, since 2×21482148691² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21482148661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10741074345 + 10741074346.

It is an arithmetic number, because the mean of its divisors is an integer number (10741074346).

Almost surely, 2^21482148691 is an apocalyptic number.

21482148691 is a deficient number, since it is larger than the sum of its proper divisors (1).

21482148691 is an equidigital number, since it uses as much as digits as its factorization.

21482148691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 221184, while the sum is 46.

The spelling of 21482148691 in words is "twenty-one billion, four hundred eighty-two million, one hundred forty-eight thousand, six hundred ninety-one".