77946996579573 has 16 divisors (see below), whose sum is σ = 115299101260800. Its totient is φ = 46439915783280.

The previous prime is 77946996579559. The next prime is 77946996579577. The reversal of 77946996579573 is 37597569964977.

It is not a de Polignac number, because 77946996579573 - 2²⁰ = 77946995530997 is a prime.

It is a super-2 number, since 2×77946996579573² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77946996579577) 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, 20017203133 + ... + 20017207026.

It is an arithmetic number, because the mean of its divisors is an integer number (7206193828800).

Almost surely, 2^{77946996579573} is an apocalyptic number.

It is an amenable number.

77946996579573 is a deficient number, since it is larger than the sum of its proper divisors (37352104681227).

77946996579573 is a wasteful number, since it uses less digits than its factorization.

77946996579573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40034410232.

The product of its digits is 170131978800, while the sum is 93.

The spelling of 77946996579573 in words is "seventy-seven trillion, nine hundred forty-six billion, nine hundred ninety-six million, five hundred seventy-nine thousand, five hundred seventy-three".