23778682449 has 16 divisors (see below), whose sum is σ = 31859046912. Its totient is φ = 15775440768.

The previous prime is 23778682393. The next prime is 23778682469. The reversal of 23778682449 is 94428687732.

It is a happy number.

It is not a de Polignac number, because 23778682449 - 2³¹ = 21631198801 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23778682392 and 23778682401.

It is not an unprimeable number, because it can be changed into a prime (23778682469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2452399 + ... + 2462075.

It is an arithmetic number, because the mean of its divisors is an integer number (1991190432).

Almost surely, 2^23778682449 is an apocalyptic number.

It is an amenable number.

23778682449 is a deficient number, since it is larger than the sum of its proper divisors (8080364463).

23778682449 is a wasteful number, since it uses less digits than its factorization.

23778682449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13576.

The product of its digits is 32514048, while the sum is 60.

The spelling of 23778682449 in words is "twenty-three billion, seven hundred seventy-eight million, six hundred eighty-two thousand, four hundred forty-nine".