641606257041 has 16 divisors (see below), whose sum is σ = 857019211776. Its totient is φ = 426965832656.

The previous prime is 641606257031. The next prime is 641606257063. The reversal of 641606257041 is 140752606146.

It is a cyclic number.

It is not a de Polignac number, because 641606257041 - 2⁵ = 641606257009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 641606256984 and 641606257002.

It is not an unprimeable number, because it can be changed into a prime (641606257001) 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, 6142336 + ... + 6245918.

It is an arithmetic number, because the mean of its divisors is an integer number (53563700736).

Almost surely, 2^641606257041 is an apocalyptic number.

It is an amenable number.

641606257041 is a deficient number, since it is larger than the sum of its proper divisors (215412954735).

641606257041 is a wasteful number, since it uses less digits than its factorization.

641606257041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107292.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 641606257041 in words is "six hundred forty-one billion, six hundred six million, two hundred fifty-seven thousand, forty-one".