16231667461 has 4 divisors (see below), whose sum is σ = 16303172832. Its totient is φ = 16160162092.

The previous prime is 16231667437. The next prime is 16231667471. The reversal of 16231667461 is 16476613261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16231667461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16231667471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35752345 + ... + 35752798.

It is an arithmetic number, because the mean of its divisors is an integer number (4075793208).

Almost surely, 2^16231667461 is an apocalyptic number.

It is an amenable number.

16231667461 is a deficient number, since it is larger than the sum of its proper divisors (71505371).

16231667461 is an equidigital number, since it uses as much as digits as its factorization.

16231667461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71505370.

The product of its digits is 217728, while the sum is 43.

The spelling of 16231667461 in words is "sixteen billion, two hundred thirty-one million, six hundred sixty-seven thousand, four hundred sixty-one".