21848353407 has 24 divisors (see below), whose sum is σ = 32990147424. Its totient is φ = 13907196864.

The previous prime is 21848353393. The next prime is 21848353411. The reversal of 21848353407 is 70435384812.

21848353407 is a `hidden beast` number, since 218 + 48 + 353 + 40 + 7 = 666.

It is not a de Polignac number, because 21848353407 - 2⁴ = 21848353391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21848353427) 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 23 ways as a sum of consecutive naturals, for example, 20553 + ... + 210045.

It is an arithmetic number, because the mean of its divisors is an integer number (1374589476).

Almost surely, 2^21848353407 is an apocalyptic number.

21848353407 is a deficient number, since it is larger than the sum of its proper divisors (11141794017).

21848353407 is a wasteful number, since it uses less digits than its factorization.

21848353407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190079 (or 190076 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 21848353407 in words is "twenty-one billion, eight hundred forty-eight million, three hundred fifty-three thousand, four hundred seven".