77745164832961 has 8 divisors (see below), whose sum is σ = 80132628915648. Its totient is φ = 75393602466000.

The previous prime is 77745164832943. The next prime is 77745164832991. The reversal of 77745164832961 is 16923846154777.

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 77745164832961 - 2⁹ = 77745164832449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77745164832991) 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, 8975424535 + ... + 8975433196.

It is an arithmetic number, because the mean of its divisors is an integer number (10016578614456).

Almost surely, 2^{77745164832961} is an apocalyptic number.

77745164832961 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

77745164832961 is a deficient number, since it is larger than the sum of its proper divisors (2387464082687).

77745164832961 is a wasteful number, since it uses less digits than its factorization.

77745164832961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17950857863.

The product of its digits is 426746880, while the sum is 70.

The spelling of 77745164832961 in words is "seventy-seven trillion, seven hundred forty-five billion, one hundred sixty-four million, eight hundred thirty-two thousand, nine hundred sixty-one".