786742649641 has 16 divisors (see below), whose sum is σ = 850215320640. Its totient is φ = 723694023360.

The previous prime is 786742649597. The next prime is 786742649659. The reversal of 786742649641 is 146946247687.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 786742649641 - 2⁹ = 786742649129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (786742649041) 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, 9481230 + ... + 9563848.

It is an arithmetic number, because the mean of its divisors is an integer number (53138457540).

Almost surely, 2^786742649641 is an apocalyptic number.

It is an amenable number.

786742649641 is a deficient number, since it is larger than the sum of its proper divisors (63472670999).

786742649641 is a wasteful number, since it uses less digits than its factorization.

786742649641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85176.

The product of its digits is 97542144, while the sum is 64.

The spelling of 786742649641 in words is "seven hundred eighty-six billion, seven hundred forty-two million, six hundred forty-nine thousand, six hundred forty-one".