76690138551839 has 4 divisors (see below), whose sum is σ = 78762844999224. Its totient is φ = 74617432104456.

The previous prime is 76690138551827. The next prime is 76690138551841. The reversal of 76690138551839 is 93815583109667.

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

It is a cyclic number.

It is not a de Polignac number, because 76690138551839 - 2⁴⁰ = 75590626924063 is a prime.

It is a super-2 number, since 2×76690138551839² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76690138551809) 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, 1036353223637 + ... + 1036353223710.

It is an arithmetic number, because the mean of its divisors is an integer number (19690711249806).

Almost surely, 2^{76690138551839} is an apocalyptic number.

76690138551839 is a deficient number, since it is larger than the sum of its proper divisors (2072706447385).

76690138551839 is a wasteful number, since it uses less digits than its factorization.

76690138551839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2072706447384.

The product of its (nonzero) digits is 293932800, while the sum is 71.

The spelling of 76690138551839 in words is "seventy-six trillion, six hundred ninety billion, one hundred thirty-eight million, five hundred fifty-one thousand, eight hundred thirty-nine".