76334721646 has 4 divisors (see below), whose sum is σ = 114502082472. Its totient is φ = 38167360822.

The previous prime is 76334721637. The next prime is 76334721653. The reversal of 76334721646 is 64612743367.

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

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 76334721646.

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, 19083680410 + ... + 19083680413.

It is an arithmetic number, because the mean of its divisors is an integer number (28625520618).

Almost surely, 2^76334721646 is an apocalyptic number.

76334721646 is a deficient number, since it is larger than the sum of its proper divisors (38167360826).

76334721646 is a wasteful number, since it uses less digits than its factorization.

76334721646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38167360825.

The product of its digits is 3048192, while the sum is 49.

The spelling of 76334721646 in words is "seventy-six billion, three hundred thirty-four million, seven hundred twenty-one thousand, six hundred forty-six".