641468790391 has 8 divisors (see below), whose sum is σ = 753613683984. Its totient is φ = 538295488320.

The previous prime is 641468790371. The next prime is 641468790409. The reversal of 641468790391 is 193097864146.

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 641468790391 - 2²³ = 641460401783 is a prime.

It is a super-4 number, since 4×641468790391⁴ (a number of 48 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641468790371) 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, 2242897726 + ... + 2242898011.

It is an arithmetic number, because the mean of its divisors is an integer number (94201710498).

Almost surely, 2^641468790391 is an apocalyptic number.

641468790391 is a deficient number, since it is larger than the sum of its proper divisors (112144893593).

641468790391 is a wasteful number, since it uses less digits than its factorization.

641468790391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4485795761.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 641468790391 in words is "six hundred forty-one billion, four hundred sixty-eight million, seven hundred ninety thousand, three hundred ninety-one".