77464646142765 has 32 divisors (see below), whose sum is σ = 141649972803840. Its totient is φ = 35412326129664.

The previous prime is 77464646142761. The next prime is 77464646142781. The reversal of 77464646142765 is 56724164646477.

It is not a de Polignac number, because 77464646142765 - 2² = 77464646142761 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 77464646142765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77464646142761) 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 31 ways as a sum of consecutive naturals, for example, 76228077 + ... + 77237613.

It is an arithmetic number, because the mean of its divisors is an integer number (4426561650120).

Almost surely, 2^{77464646142765} is an apocalyptic number.

It is an amenable number.

77464646142765 is a deficient number, since it is larger than the sum of its proper divisors (64185326661075).

77464646142765 is a wasteful number, since it uses less digits than its factorization.

77464646142765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740341.

The product of its digits is 1137991680, while the sum is 69.

The spelling of 77464646142765 in words is "seventy-seven trillion, four hundred sixty-four billion, six hundred forty-six million, one hundred forty-two thousand, seven hundred sixty-five".