641121153 has 8 divisors (see below), whose sum is σ = 905112288. Its totient is φ = 402272064.

The previous prime is 641121127. The next prime is 641121181. The reversal of 641121153 is 351121146.

It is a happy number.

641121153 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 641121153 - 2⁸ = 641120897 is a prime.

It is a super-2 number, since 2×641121153² = 822072665648098818, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (641121053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6285451 + ... + 6285552.

It is an arithmetic number, because the mean of its divisors is an integer number (113139036).

Almost surely, 2^641121153 is an apocalyptic number.

It is an amenable number.

641121153 is a deficient number, since it is larger than the sum of its proper divisors (263991135).

641121153 is a wasteful number, since it uses less digits than its factorization.

641121153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12571023.

The product of its digits is 720, while the sum is 24.

The square root of 641121153 is about 25320.3703171972. The cubic root of 641121153 is about 862.2768013927.

Adding to 641121153 its reverse (351121146), we get a palindrome (992242299).

The spelling of 641121153 in words is "six hundred forty-one million, one hundred twenty-one thousand, one hundred fifty-three".