641311212126652 has 48 divisors (see below), whose sum is σ = 1128976842145824. Its totient is φ = 318750235776000.

The previous prime is 641311212126647. The next prime is 641311212126653. The reversal of 641311212126652 is 256621212113146.

It is a super-2 number, since 2×641311212126652² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 641311212126599 and 641311212126608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641311212126653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3432296752 + ... + 3432483592.

It is an arithmetic number, because the mean of its divisors is an integer number (23520350878038).

Almost surely, 2^{641311212126652} is an apocalyptic number.

It is an amenable number.

641311212126652 is a deficient number, since it is larger than the sum of its proper divisors (487665630019172).

641311212126652 is a wasteful number, since it uses less digits than its factorization.

641311212126652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191950 (or 191948 counting only the distinct ones).

The product of its digits is 207360, while the sum is 43.

Adding to 641311212126652 its reverse (256621212113146), we get a palindrome (897932424239798).

The spelling of 641311212126652 in words is "six hundred forty-one trillion, three hundred eleven billion, two hundred twelve million, one hundred twenty-six thousand, six hundred fifty-two".