23278510429 has 4 divisors (see below), whose sum is σ = 23281122940. Its totient is φ = 23275897920.

The previous prime is 23278510403. The next prime is 23278510523. The reversal of 23278510429 is 92401587232.

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 12427121529 + 10851388900 = 111477^2 + 104170^2 .

It is a cyclic number.

It is not a de Polignac number, because 23278510429 - 2⁷ = 23278510301 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 (23278510729) 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, 1292844 + ... + 1310725.

It is an arithmetic number, because the mean of its divisors is an integer number (5820280735).

Almost surely, 2^23278510429 is an apocalyptic number.

It is an amenable number.

23278510429 is a deficient number, since it is larger than the sum of its proper divisors (2612511).

23278510429 is an equidigital number, since it uses as much as digits as its factorization.

23278510429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2612510.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 23278510429 in words is "twenty-three billion, two hundred seventy-eight million, five hundred ten thousand, four hundred twenty-nine".