20400077422 has 8 divisors (see below), whose sum is σ = 30603182400. Its totient is φ = 10199016624.

The previous prime is 20400077407. The next prime is 20400077429. The reversal of 20400077422 is 22477000402.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20400077429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485847 + ... + 526162.

It is an arithmetic number, because the mean of its divisors is an integer number (3825397800).

Almost surely, 2^20400077422 is an apocalyptic number.

20400077422 is a deficient number, since it is larger than the sum of its proper divisors (10203104978).

20400077422 is a wasteful number, since it uses less digits than its factorization.

20400077422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022090.

The product of its (nonzero) digits is 6272, while the sum is 28.

Adding to 20400077422 its reverse (22477000402), we get a palindrome (42877077824).

The spelling of 20400077422 in words is "twenty billion, four hundred million, seventy-seven thousand, four hundred twenty-two".