73078865777 has 16 divisors (see below), whose sum is σ = 75685155840. Its totient is φ = 70488537600.

The previous prime is 73078865677. The next prime is 73078865779. The reversal of 73078865777 is 77756887037.

It is a cyclic number.

It is not a de Polignac number, because 73078865777 - 2¹⁰ = 73078864753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73078865779) 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, 13547993 + ... + 13553385.

It is an arithmetic number, because the mean of its divisors is an integer number (4730322240).

Almost surely, 2^73078865777 is an apocalyptic number.

It is an amenable number.

73078865777 is a deficient number, since it is larger than the sum of its proper divisors (2606290063).

73078865777 is a wasteful number, since it uses less digits than its factorization.

73078865777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6784.

The product of its (nonzero) digits is 96808320, while the sum is 65.

The spelling of 73078865777 in words is "seventy-three billion, seventy-eight million, eight hundred sixty-five thousand, seven hundred seventy-seven".