641562046452533 has 4 divisors (see below), whose sum is σ = 641565126370560. Its totient is φ = 641558966534508.

The previous prime is 641562046452461. The next prime is 641562046452553. The reversal of 641562046452533 is 335254640265146.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 641562046452533 - 2⁴⁰ = 640462534824757 is a prime.

It is a super-2 number, since 2×641562046452533² (a number of 30 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 (641562046452553) 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, 1539646535 + ... + 1540063172.

It is an arithmetic number, because the mean of its divisors is an integer number (160391281592640).

Almost surely, 2^{641562046452533} is an apocalyptic number.

It is an amenable number.

641562046452533 is a deficient number, since it is larger than the sum of its proper divisors (3079918027).

641562046452533 is a wasteful number, since it uses less digits than its factorization.

641562046452533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3079918026.

The product of its (nonzero) digits is 62208000, while the sum is 56.

The spelling of 641562046452533 in words is "six hundred forty-one trillion, five hundred sixty-two billion, forty-six million, four hundred fifty-two thousand, five hundred thirty-three".