641133028763 has 4 divisors (see below), whose sum is σ = 641142354528. Its totient is φ = 641123703000.

The previous prime is 641133028733. The next prime is 641133028769. The reversal of 641133028763 is 367820331146.

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 641133028763 - 2²² = 641128834459 is a prime.

It is a super-2 number, since 2×641133028763² (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 (641133028769) 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, 4558988 + ... + 4697513.

It is an arithmetic number, because the mean of its divisors is an integer number (160285588632).

Almost surely, 2^641133028763 is an apocalyptic number.

641133028763 is a deficient number, since it is larger than the sum of its proper divisors (9325765).

641133028763 is an equidigital number, since it uses as much as digits as its factorization.

641133028763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9325764.

The product of its (nonzero) digits is 435456, while the sum is 44.

The spelling of 641133028763 in words is "six hundred forty-one billion, one hundred thirty-three million, twenty-eight thousand, seven hundred sixty-three".