21485658412 has 24 divisors (see below), whose sum is σ = 37823490432. Its totient is φ = 10679088000.

The previous prime is 21485658407. The next prime is 21485658419.

21485658412 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (21485658419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 608112 + ... + 642472.

It is an arithmetic number, because the mean of its divisors is an integer number (1575978768).

Almost surely, 2^21485658412 is an apocalyptic number.

It is an amenable number.

21485658412 is a deficient number, since it is larger than the sum of its proper divisors (16337832020).

21485658412 is a wasteful number, since it uses less digits than its factorization.

21485658412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35289 (or 35287 counting only the distinct ones).

The product of its digits is 614400, while the sum is 46.

The spelling of 21485658412 in words is "twenty-one billion, four hundred eighty-five million, six hundred fifty-eight thousand, four hundred twelve".