641115046461777 has 16 divisors (see below), whose sum is σ = 856178925063168. Its totient is φ = 426730605996240.

The previous prime is 641115046461709. The next prime is 641115046461779. The reversal of 641115046461777 is 777164640511146.

It is not a de Polignac number, because 641115046461777 - 2⁸ = 641115046461521 is a prime.

It is a super-2 number, since 2×641115046461777² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 641115046461777.

It is not an unprimeable number, because it can be changed into a prime (641115046461779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 456388158 + ... + 457790760.

It is an arithmetic number, because the mean of its divisors is an integer number (53511182816448).

Almost surely, 2^{641115046461777} is an apocalyptic number.

It is an amenable number.

641115046461777 is a deficient number, since it is larger than the sum of its proper divisors (215063878601391).

641115046461777 is a wasteful number, since it uses less digits than its factorization.

641115046461777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644700.

The product of its (nonzero) digits is 23708160, while the sum is 60.

The spelling of 641115046461777 in words is "six hundred forty-one trillion, one hundred fifteen billion, forty-six million, four hundred sixty-one thousand, seven hundred seventy-seven".