641332315515213 has 48 divisors (see below), whose sum is σ = 1059631704383616. Its totient is φ = 366155766852480.

The previous prime is 641332315515209. The next prime is 641332315515233. The reversal of 641332315515213 is 312515513233146.

641332315515213 is a `hidden beast` number, since 6 + 4 + 1 + 3 + 3 + 2 + 31 + 551 + 52 + 13 = 666.

It is not a de Polignac number, because 641332315515213 - 2² = 641332315515209 is a prime.

It is a super-2 number, since 2×641332315515213² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641332315515233) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 331792695 + ... + 333720027.

It is an arithmetic number, because the mean of its divisors is an integer number (22075660507992).

Almost surely, 2^{641332315515213} is an apocalyptic number.

641332315515213 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

641332315515213 is a deficient number, since it is larger than the sum of its proper divisors (418299388868403).

641332315515213 is a wasteful number, since it uses less digits than its factorization.

641332315515213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1931954 (or 1931951 counting only the distinct ones).

The product of its digits is 972000, while the sum is 45.

Adding to 641332315515213 its reverse (312515513233146), we get a palindrome (953847828748359).

The spelling of 641332315515213 in words is "six hundred forty-one trillion, three hundred thirty-two billion, three hundred fifteen million, five hundred fifteen thousand, two hundred thirteen".