21677353075 has 24 divisors (see below), whose sum is σ = 30737318400. Its totient is φ = 14856045600.

The previous prime is 21677353073. The next prime is 21677353109. The reversal of 21677353075 is 57035377612.

It is not a de Polignac number, because 21677353075 - 2¹ = 21677353073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21677353073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 282726 + ... + 351124.

It is an arithmetic number, because the mean of its divisors is an integer number (1280721600).

Almost surely, 2^21677353075 is an apocalyptic number.

21677353075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21677353075 is a deficient number, since it is larger than the sum of its proper divisors (9059965325).

21677353075 is a wasteful number, since it uses less digits than its factorization.

21677353075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70227 (or 70222 counting only the distinct ones).

The product of its (nonzero) digits is 926100, while the sum is 46.

The spelling of 21677353075 in words is "twenty-one billion, six hundred seventy-seven million, three hundred fifty-three thousand, seventy-five".