23278144937 has 8 divisors (see below), whose sum is σ = 25348252800. Its totient is φ = 21292531344.

The previous prime is 23278144919. The next prime is 23278144943. The reversal of 23278144937 is 73944187232.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23278144937 - 2⁶ = 23278144873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23278144237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21122993 + ... + 21124094.

It is an arithmetic number, because the mean of its divisors is an integer number (3168531600).

Almost surely, 2^23278144937 is an apocalyptic number.

It is an amenable number.

23278144937 is a deficient number, since it is larger than the sum of its proper divisors (2070107863).

23278144937 is a wasteful number, since it uses less digits than its factorization.

23278144937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42247135.

The product of its digits is 2032128, while the sum is 50.

The spelling of 23278144937 in words is "twenty-three billion, two hundred seventy-eight million, one hundred forty-four thousand, nine hundred thirty-seven".