400040001145571 has 2 divisors, whose sum is σ = 400040001145572. Its totient is φ = 400040001145570.

The previous prime is 400040001145549. The next prime is 400040001145579. The reversal of 400040001145571 is 175541100040004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400040001145571 - 2¹⁴ = 400040001129187 is a prime.

It is not a weakly prime, because it can be changed into another prime (400040001145579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200020000572785 + 200020000572786.

It is an arithmetic number, because the mean of its divisors is an integer number (200020000572786).

Almost surely, 2^{400040001145571} is an apocalyptic number.

400040001145571 is a deficient number, since it is larger than the sum of its proper divisors (1).

400040001145571 is an equidigital number, since it uses as much as digits as its factorization.

400040001145571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11200, while the sum is 32.

Adding to 400040001145571 its reverse (175541100040004), we get a palindrome (575581101185575).

The spelling of 400040001145571 in words is "four hundred trillion, forty billion, one million, one hundred forty-five thousand, five hundred seventy-one".