22423778451 has 10 divisors (see below), whose sum is σ = 33497249412. Its totient is φ = 14949185580.

The previous prime is 22423778387. The next prime is 22423778471. The reversal of 22423778451 is 15487732422.

22423778451 is a `hidden beast` number, since 224 + 2 + 377 + 8 + 4 + 51 = 666.

It is not a de Polignac number, because 22423778451 - 2⁶ = 22423778387 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22423778397 and 22423778406.

It is not an unprimeable number, because it can be changed into a prime (22423778471) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 138418305 + ... + 138418466.

Almost surely, 2^22423778451 is an apocalyptic number.

22423778451 is a deficient number, since it is larger than the sum of its proper divisors (11073470961).

22423778451 is an equidigital number, since it uses as much as digits as its factorization.

22423778451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276836783 (or 276836774 counting only the distinct ones).

The product of its digits is 752640, while the sum is 45.

The spelling of 22423778451 in words is "twenty-two billion, four hundred twenty-three million, seven hundred seventy-eight thousand, four hundred fifty-one".