77066719801 has 4 divisors (see below), whose sum is σ = 77655015504. Its totient is φ = 76478424100.

The previous prime is 77066719759. The next prime is 77066719811. The reversal of 77066719801 is 10891766077.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10891766077 = 239 ⋅45572243.

It is a cyclic number.

It is not a de Polignac number, because 77066719801 - 2²⁵ = 77033165369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77066719811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294147655 + ... + 294147916.

It is an arithmetic number, because the mean of its divisors is an integer number (19413753876).

Almost surely, 2^77066719801 is an apocalyptic number.

It is an amenable number.

77066719801 is a deficient number, since it is larger than the sum of its proper divisors (588295703).

77066719801 is a wasteful number, since it uses less digits than its factorization.

77066719801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588295702.

The product of its (nonzero) digits is 889056, while the sum is 52.

The spelling of 77066719801 in words is "seventy-seven billion, sixty-six million, seven hundred nineteen thousand, eight hundred one".