21367207146 has 16 divisors (see below), whose sum is σ = 45248203584. Its totient is φ = 6703437504.

The previous prime is 21367207087. The next prime is 21367207151. The reversal of 21367207146 is 64170276312.

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, 104741110 + ... + 104741313.

It is an arithmetic number, because the mean of its divisors is an integer number (2828012724).

Almost surely, 2^21367207146 is an apocalyptic number.

21367207146 is an abundant number, since it is smaller than the sum of its proper divisors (23880996438).

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

21367207146 is a wasteful number, since it uses less digits than its factorization.

21367207146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209482445.

The product of its (nonzero) digits is 84672, while the sum is 39.

The spelling of 21367207146 in words is "twenty-one billion, three hundred sixty-seven million, two hundred seven thousand, one hundred forty-six".