641275662497 has 8 divisors (see below), whose sum is σ = 656929405440. Its totient is φ = 625622532640.

The previous prime is 641275662493. The next prime is 641275662523. The reversal of 641275662497 is 794266572146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 641275662497 - 2² = 641275662493 is a prime.

It is a super-2 number, since 2×641275662497² (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 (641275662493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2530928 + ... + 2772750.

It is an arithmetic number, because the mean of its divisors is an integer number (82116175680).

Almost surely, 2^641275662497 is an apocalyptic number.

It is an amenable number.

641275662497 is a deficient number, since it is larger than the sum of its proper divisors (15653742943).

641275662497 is a wasteful number, since it uses less digits than its factorization.

641275662497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306543.

The product of its digits is 30481920, while the sum is 59.

The spelling of 641275662497 in words is "six hundred forty-one billion, two hundred seventy-five million, six hundred sixty-two thousand, four hundred ninety-seven".