23279328377 has 4 divisors (see below), whose sum is σ = 23847116916. Its totient is φ = 22711539840.

The previous prime is 23279328349. The next prime is 23279328431. The reversal of 23279328377 is 77382397232.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9647364841 + 13631963536 = 98221^2 + 116756^2 .

It is a cyclic number.

It is not a de Polignac number, because 23279328377 - 2¹² = 23279324281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23279328337) 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, 283894208 + ... + 283894289.

It is an arithmetic number, because the mean of its divisors is an integer number (5961779229).

Almost surely, 2^23279328377 is an apocalyptic number.

It is an amenable number.

23279328377 is a deficient number, since it is larger than the sum of its proper divisors (567788539).

23279328377 is an equidigital number, since it uses as much as digits as its factorization.

23279328377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567788538.

The product of its digits is 5334336, while the sum is 53.

The spelling of 23279328377 in words is "twenty-three billion, two hundred seventy-nine million, three hundred twenty-eight thousand, three hundred seventy-seven".