163231554001 has 16 divisors (see below), whose sum is σ = 170940432384. Its totient is φ = 155574478224.

The previous prime is 163231553983. The next prime is 163231554077. The reversal of 163231554001 is 100455132361.

It is a cyclic number.

It is not a de Polignac number, because 163231554001 - 2⁷ = 163231553873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163231554901) 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, 9566860 + ... + 9583906.

It is an arithmetic number, because the mean of its divisors is an integer number (10683777024).

Almost surely, 2^163231554001 is an apocalyptic number.

It is an amenable number.

163231554001 is a deficient number, since it is larger than the sum of its proper divisors (7708878383).

163231554001 is a wasteful number, since it uses less digits than its factorization.

163231554001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18540.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 163231554001 its reverse (100455132361), we get a palindrome (263686686362).

The spelling of 163231554001 in words is "one hundred sixty-three billion, two hundred thirty-one million, five hundred fifty-four thousand, one".