6401553322011 has 8 divisors (see below), whose sum is σ = 8591930287104. Its totient is φ = 4239439285800.

The previous prime is 6401553321983. The next prime is 6401553322027. The reversal of 6401553322011 is 1102233551046.

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

It is not a de Polignac number, because 6401553322011 - 2¹³ = 6401553313819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6401553322711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7065731691 + ... + 7065732596.

It is an arithmetic number, because the mean of its divisors is an integer number (1073991285888).

Almost surely, 2^{6401553322011} is an apocalyptic number.

6401553322011 is a deficient number, since it is larger than the sum of its proper divisors (2190376965093).

6401553322011 is a wasteful number, since it uses less digits than its factorization.

6401553322011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14131464441.

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 6401553322011 its reverse (1102233551046), we get a palindrome (7503786873057).

The spelling of 6401553322011 in words is "six trillion, four hundred one billion, five hundred fifty-three million, three hundred twenty-two thousand, eleven".