23467216721 has 16 divisors (see below), whose sum is σ = 27622199808. Its totient is φ = 19730131200.

The previous prime is 23467216691. The next prime is 23467216723. The reversal of 23467216721 is 12761276432.

It is not a de Polignac number, because 23467216721 - 2⁶ = 23467216657 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23467216723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1705835 + ... + 1719536.

It is an arithmetic number, because the mean of its divisors is an integer number (1726387488).

Almost surely, 2^23467216721 is an apocalyptic number.

It is an amenable number.

23467216721 is a deficient number, since it is larger than the sum of its proper divisors (4154983087).

23467216721 is a wasteful number, since it uses less digits than its factorization.

23467216721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3425432.

The product of its digits is 169344, while the sum is 41.

The spelling of 23467216721 in words is "twenty-three billion, four hundred sixty-seven million, two hundred sixteen thousand, seven hundred twenty-one".