778758800073 has 12 divisors (see below), whose sum is σ = 1095871110768. Its totient is φ = 491847662520.

The previous prime is 778758800051. The next prime is 778758800117. The reversal of 778758800073 is 370008857877.

It is not a de Polignac number, because 778758800073 - 2⁵ = 778758800041 is a prime.

It is a super-2 number, since 2×778758800073² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (778758800173) 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 11 ways as a sum of consecutive naturals, for example, 359536683 + ... + 359538848.

It is an arithmetic number, because the mean of its divisors is an integer number (91322592564).

Almost surely, 2^778758800073 is an apocalyptic number.

It is an amenable number.

778758800073 is a deficient number, since it is larger than the sum of its proper divisors (317112310695).

778758800073 is a wasteful number, since it uses less digits than its factorization.

778758800073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719075572 (or 719075553 counting only the distinct ones).

The product of its (nonzero) digits is 18439680, while the sum is 60.

The spelling of 778758800073 in words is "seven hundred seventy-eight billion, seven hundred fifty-eight million, eight hundred thousand, seventy-three".