641616036371 has 4 divisors (see below), whose sum is σ = 641621510544. Its totient is φ = 641610562200.

The previous prime is 641616036343. The next prime is 641616036427. The reversal of 641616036371 is 173630616146.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 641616036371 - 2¹⁴ = 641616019987 is a prime.

It is a super-2 number, since 2×641616036371² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641616036301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2557340 + ... + 2797001.

It is an arithmetic number, because the mean of its divisors is an integer number (160405377636).

Almost surely, 2^641616036371 is an apocalyptic number.

641616036371 is a deficient number, since it is larger than the sum of its proper divisors (5474173).

641616036371 is a wasteful number, since it uses less digits than its factorization.

641616036371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5474172.

The product of its (nonzero) digits is 326592, while the sum is 44.

The spelling of 641616036371 in words is "six hundred forty-one billion, six hundred sixteen million, thirty-six thousand, three hundred seventy-one".