23276657491 has 4 divisors (see below), whose sum is σ = 23280142984. Its totient is φ = 23273172000.

The previous prime is 23276657479. The next prime is 23276657497. The reversal of 23276657491 is 19475667232.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23276657491 - 2⁹ = 23276656979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23276657497) 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, 1732710 + ... + 1746091.

It is an arithmetic number, because the mean of its divisors is an integer number (5820035746).

Almost surely, 2^23276657491 is an apocalyptic number.

23276657491 is a deficient number, since it is larger than the sum of its proper divisors (3485493).

23276657491 is an equidigital number, since it uses as much as digits as its factorization.

23276657491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3485492.

The product of its digits is 3810240, while the sum is 52.

The spelling of 23276657491 in words is "twenty-three billion, two hundred seventy-six million, six hundred fifty-seven thousand, four hundred ninety-one".