23467777778 has 4 divisors (see below), whose sum is σ = 35201666670. Its totient is φ = 11733888888.

The previous prime is 23467777777. The next prime is 23467777807. The reversal of 23467777778 is 87777776432.

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

It can be written as a sum of positive squares in only one way, i.e., 23416038529 + 51739249 = 153023^2 + 7193^2 .

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (23467777777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5866944443 + ... + 5866944446.

Almost surely, 2^23467777778 is an apocalyptic number.

23467777778 is a deficient number, since it is larger than the sum of its proper divisors (11733888892).

23467777778 is a wasteful number, since it uses less digits than its factorization.

23467777778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11733888891.

The product of its digits is 135531648, while the sum is 65.

The spelling of 23467777778 in words is "twenty-three billion, four hundred sixty-seven million, seven hundred seventy-seven thousand, seven hundred seventy-eight".