641204610012645 has 96 divisors (see below), whose sum is σ = 1194149927448576. Its totient is φ = 292944288873600.

The previous prime is 641204610012623. The next prime is 641204610012691. The reversal of 641204610012645 is 546210016402146.

It is a happy number.

It is not a de Polignac number, because 641204610012645 - 2¹¹ = 641204610010597 is a prime.

It is a super-2 number, since 2×641204610012645² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 641204610012597 and 641204610012606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8341268560 + ... + 8341345430.

It is an arithmetic number, because the mean of its divisors is an integer number (12439061744256).

Almost surely, 2^{641204610012645} is an apocalyptic number.

It is an amenable number.

641204610012645 is a deficient number, since it is larger than the sum of its proper divisors (552945317435931).

641204610012645 is a wasteful number, since it uses less digits than its factorization.

641204610012645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83631 (or 83624 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 641204610012645 in words is "six hundred forty-one trillion, two hundred four billion, six hundred ten million, twelve thousand, six hundred forty-five".