76990188061 has 2 divisors, whose sum is σ = 76990188062. Its totient is φ = 76990188060.

The previous prime is 76990188053. The next prime is 76990188083. The reversal of 76990188061 is 16088109967.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61011964036 + 15978224025 = 247006^2 + 126405^2 .

It is an emirp because it is prime and its reverse (16088109967) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76990188061 - 2³ = 76990188053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 76990187993 and 76990188011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76990288061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38495094030 + 38495094031.

It is an arithmetic number, because the mean of its divisors is an integer number (38495094031).

Almost surely, 2^76990188061 is an apocalyptic number.

It is an amenable number.

76990188061 is a deficient number, since it is larger than the sum of its proper divisors (1).

76990188061 is an equidigital number, since it uses as much as digits as its factorization.

76990188061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 55.

The spelling of 76990188061 in words is "seventy-six billion, nine hundred ninety million, one hundred eighty-eight thousand, sixty-one".