780664661041 has 8 divisors (see below), whose sum is σ = 843961796480. Its totient is φ = 719588477808.

The previous prime is 780664661039. The next prime is 780664661047. The reversal of 780664661041 is 140166466087.

It is a happy number.

780664661041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 780664661041 - 2¹ = 780664661039 is a prime.

It is not an unprimeable number, because it can be changed into a prime (780664661047) 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, 555237321 + ... + 555238726.

It is an arithmetic number, because the mean of its divisors is an integer number (105495224560).

Almost surely, 2^780664661041 is an apocalyptic number.

It is an amenable number.

780664661041 is a deficient number, since it is larger than the sum of its proper divisors (63297135439).

780664661041 is a wasteful number, since it uses less digits than its factorization.

780664661041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110476103.

The product of its (nonzero) digits is 1161216, while the sum is 49.

It can be divided in two parts, 7806646 and 61041, that added together give a palindrome (7867687).

The spelling of 780664661041 in words is "seven hundred eighty billion, six hundred sixty-four million, six hundred sixty-one thousand, forty-one".