641332020101 has 16 divisors (see below), whose sum is σ = 668363404800. Its totient is φ = 615022082928.

The previous prime is 641332020097. The next prime is 641332020137. The reversal of 641332020101 is 101020233146.

It is a cyclic number.

It is not a de Polignac number, because 641332020101 - 2² = 641332020097 is a prime.

It is a super-2 number, since 2×641332020101² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641332020181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380411 + ... + 1194728.

It is an arithmetic number, because the mean of its divisors is an integer number (41772712800).

Almost surely, 2^641332020101 is an apocalyptic number.

It is an amenable number.

641332020101 is a deficient number, since it is larger than the sum of its proper divisors (27031384699).

641332020101 is a wasteful number, since it uses less digits than its factorization.

641332020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575368.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 641332020101 its reverse (101020233146), we get a palindrome (742352253247).

The spelling of 641332020101 in words is "six hundred forty-one billion, three hundred thirty-two million, twenty thousand, one hundred one".