76681580136163 has 4 divisors (see below), whose sum is σ = 76682175050968. Its totient is φ = 76680985221360.

The previous prime is 76681580136137. The next prime is 76681580136167. The reversal of 76681580136163 is 36163108518667.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76681580136163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76681580136167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297264018 + ... + 297521863.

It is an arithmetic number, because the mean of its divisors is an integer number (19170543762742).

Almost surely, 2^{76681580136163} is an apocalyptic number.

76681580136163 is a deficient number, since it is larger than the sum of its proper divisors (594914805).

76681580136163 is a wasteful number, since it uses less digits than its factorization.

76681580136163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594914804.

The product of its (nonzero) digits is 26127360, while the sum is 61.

The spelling of 76681580136163 in words is "seventy-six trillion, six hundred eighty-one billion, five hundred eighty million, one hundred thirty-six thousand, one hundred sixty-three".