77326593863966 has 4 divisors (see below), whose sum is σ = 115989890795952. Its totient is φ = 38663296931982.

The previous prime is 77326593863947. The next prime is 77326593863971. The reversal of 77326593863966 is 66936839562377.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×77326593863966² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19331648465990 + ... + 19331648465993.

It is an arithmetic number, because the mean of its divisors is an integer number (28997472698988).

Almost surely, 2^{77326593863966} is an apocalyptic number.

77326593863966 is a deficient number, since it is larger than the sum of its proper divisors (38663296931986).

77326593863966 is a wasteful number, since it uses less digits than its factorization.

77326593863966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38663296931985.

The product of its digits is 11110659840, while the sum is 80.

The spelling of 77326593863966 in words is "seventy-seven trillion, three hundred twenty-six billion, five hundred ninety-three million, eight hundred sixty-three thousand, nine hundred sixty-six".