21485854675 has 24 divisors (see below), whose sum is σ = 27417950000. Its totient is φ = 16690250880.

The previous prime is 21485854613. The next prime is 21485854703. The reversal of 21485854675 is 57645858412.

It is not a de Polignac number, because 21485854675 - 2⁹ = 21485854163 is a prime.

It is a super-2 number, since 2×21485854675² (a number of 21 digits) contains 22 as substring.

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, 438301 + ... + 484849.

Almost surely, 2^21485854675 is an apocalyptic number.

21485854675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21485854675 is a deficient number, since it is larger than the sum of its proper divisors (5932095325).

21485854675 is a wasteful number, since it uses less digits than its factorization.

21485854675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47095 (or 47090 counting only the distinct ones).

The product of its digits is 10752000, while the sum is 55.

The spelling of 21485854675 in words is "twenty-one billion, four hundred eighty-five million, eight hundred fifty-four thousand, six hundred seventy-five".