641517531151 has 8 divisors (see below), whose sum is σ = 733364839424. Its totient is φ = 549720709560.

The previous prime is 641517531119. The next prime is 641517531163. The reversal of 641517531151 is 151135715146.

It is a happy number.

641517531151 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 a cyclic number.

It is not a de Polignac number, because 641517531151 - 2⁵ = 641517531119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641517531181) 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, 12594435 + ... + 12645268.

It is an arithmetic number, because the mean of its divisors is an integer number (91670604928).

Almost surely, 2^641517531151 is an apocalyptic number.

641517531151 is a deficient number, since it is larger than the sum of its proper divisors (91847308273).

641517531151 is a wasteful number, since it uses less digits than its factorization.

641517531151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25243341.

The product of its digits is 63000, while the sum is 40.

The spelling of 641517531151 in words is "six hundred forty-one billion, five hundred seventeen million, five hundred thirty-one thousand, one hundred fifty-one".