21674247612 has 24 divisors (see below), whose sum is σ = 51940089936. Its totient is φ = 7029485568.

The previous prime is 21674247607. The next prime is 21674247629.

21674247612 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24407493 + ... + 24408380.

It is an arithmetic number, because the mean of its divisors is an integer number (2164170414).

Almost surely, 2^21674247612 is an apocalyptic number.

It is an amenable number.

21674247612 is an abundant number, since it is smaller than the sum of its proper divisors (30265842324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21674247612 is a wasteful number, since it uses less digits than its factorization.

21674247612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48815917 (or 48815915 counting only the distinct ones).

The product of its digits is 225792, while the sum is 42.

The spelling of 21674247612 in words is "twenty-one billion, six hundred seventy-four million, two hundred forty-seven thousand, six hundred twelve".