641152767251146 has 4 divisors (see below), whose sum is σ = 961729150876722. Its totient is φ = 320576383625572.

The previous prime is 641152767251141. The next prime is 641152767251203.

641152767251146 is nontrivially palindromic in base 10.

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

It can be written as a sum of positive squares in only one way, i.e., 332281456930921 + 308871310320225 = 18228589^2 + 17574735^2 .

It is a super-2 number, since 2×641152767251146² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641152767251141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160288191812785 + ... + 160288191812788.

Almost surely, 2^{641152767251146} is an apocalyptic number.

641152767251146 is a deficient number, since it is larger than the sum of its proper divisors (320576383625576).

641152767251146 is a wasteful number, since it uses less digits than its factorization.

641152767251146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320576383625575.

The product of its digits is 16934400, while the sum is 58.

The spelling of 641152767251146 in words is "six hundred forty-one trillion, one hundred fifty-two billion, seven hundred sixty-seven million, two hundred fifty-one thousand, one hundred forty-six".