400220002323451 has 16 divisors (see below), whose sum is σ = 424701173433600. Its totient is φ = 376328916884448.

The previous prime is 400220002323409. The next prime is 400220002323481. The reversal of 400220002323451 is 154323200022004.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400220002323451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400220002323481) 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, 359835445 + ... + 360945961.

It is an arithmetic number, because the mean of its divisors is an integer number (26543823339600).

Almost surely, 2^{400220002323451} is an apocalyptic number.

400220002323451 is a deficient number, since it is larger than the sum of its proper divisors (24481171110149).

400220002323451 is a wasteful number, since it uses less digits than its factorization.

400220002323451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376178.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 400220002323451 its reverse (154323200022004), we get a palindrome (554543202345455).

The spelling of 400220002323451 in words is "four hundred trillion, two hundred twenty billion, two million, three hundred twenty-three thousand, four hundred fifty-one".