641161533403 has 4 divisors (see below), whose sum is σ = 641732470888. Its totient is φ = 640590595920.

The previous prime is 641161533377. The next prime is 641161533409. The reversal of 641161533403 is 304335161146.

641161533403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 641161533403 - 2³³ = 632571598811 is a prime.

It is a super-2 number, since 2×641161533403² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641161533409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285467058 + ... + 285469303.

It is an arithmetic number, because the mean of its divisors is an integer number (160433117722).

Almost surely, 2^641161533403 is an apocalyptic number.

641161533403 is a deficient number, since it is larger than the sum of its proper divisors (570937485).

641161533403 is a wasteful number, since it uses less digits than its factorization.

641161533403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570937484.

The product of its (nonzero) digits is 77760, while the sum is 37.

Adding to 641161533403 its reverse (304335161146), we get a palindrome (945496694549).

The spelling of 641161533403 in words is "six hundred forty-one billion, one hundred sixty-one million, five hundred thirty-three thousand, four hundred three".