76988477197 has 2 divisors, whose sum is σ = 76988477198. Its totient is φ = 76988477196.

The previous prime is 76988477191. The next prime is 76988477213. The reversal of 76988477197 is 79177488967.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40428742761 + 36559734436 = 201069^2 + 191206^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76988477197 is a prime.

It is a super-2 number, since 2×76988477197² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76988477191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38494238598 + 38494238599.

It is an arithmetic number, because the mean of its divisors is an integer number (38494238599).

Almost surely, 2^76988477197 is an apocalyptic number.

It is an amenable number.

76988477197 is a deficient number, since it is larger than the sum of its proper divisors (1).

76988477197 is an equidigital number, since it uses as much as digits as its factorization.

76988477197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 298722816, while the sum is 73.

The spelling of 76988477197 in words is "seventy-six billion, nine hundred eighty-eight million, four hundred seventy-seven thousand, one hundred ninety-seven".