6401111661153 has 48 divisors (see below), whose sum is σ = 10360667169216. Its totient is φ = 3774080718720.

The previous prime is 6401111661151. The next prime is 6401111661187. The reversal of 6401111661153 is 3511661111046.

6401111661153 is a `hidden beast` number, since 640 + 1 + 1 + 1 + 1 + 6 + 6 + 1 + 1 + 5 + 3 = 666.

It is not a de Polignac number, because 6401111661153 - 2¹ = 6401111661151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6401111661151) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26741626 + ... + 26979932.

It is an arithmetic number, because the mean of its divisors is an integer number (215847232692).

Almost surely, 2^{6401111661153} is an apocalyptic number.

It is an amenable number.

6401111661153 is a deficient number, since it is larger than the sum of its proper divisors (3959555508063).

6401111661153 is a wasteful number, since it uses less digits than its factorization.

6401111661153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245694 (or 245691 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

Adding to 6401111661153 its reverse (3511661111046), we get a palindrome (9912772772199).

The spelling of 6401111661153 in words is "six trillion, four hundred one billion, one hundred eleven million, six hundred sixty-one thousand, one hundred fifty-three".