21314475707 has 24 divisors (see below), whose sum is σ = 25499572896. Its totient is φ = 17439791616.

The previous prime is 21314475691. The next prime is 21314475811. The reversal of 21314475707 is 70757441312.

It is a happy number.

It is not a de Polignac number, because 21314475707 - 2⁴ = 21314475691 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21314445707) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 712883 + ... + 742179.

It is an arithmetic number, because the mean of its divisors is an integer number (1062482204).

Almost surely, 2^21314475707 is an apocalyptic number.

21314475707 is a deficient number, since it is larger than the sum of its proper divisors (4185097189).

21314475707 is an equidigital number, since it uses as much as digits as its factorization.

21314475707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29447 (or 29394 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 41.

The spelling of 21314475707 in words is "twenty-one billion, three hundred fourteen million, four hundred seventy-five thousand, seven hundred seven".