23434137278 has 4 divisors (see below), whose sum is σ = 35151205920. Its totient is φ = 11717068638.

The previous prime is 23434137277. The next prime is 23434137313. The reversal of 23434137278 is 87273143432.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23434137277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5858534318 + ... + 5858534321.

It is an arithmetic number, because the mean of its divisors is an integer number (8787801480).

Almost surely, 2^23434137278 is an apocalyptic number.

23434137278 is a deficient number, since it is larger than the sum of its proper divisors (11717068642).

23434137278 is a wasteful number, since it uses less digits than its factorization.

23434137278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11717068641.

The product of its digits is 677376, while the sum is 44.

The spelling of 23434137278 in words is "twenty-three billion, four hundred thirty-four million, one hundred thirty-seven thousand, two hundred seventy-eight".