76471983971477 has 2 divisors, whose sum is σ = 76471983971478. Its totient is φ = 76471983971476.

The previous prime is 76471983971443. The next prime is 76471983971489. The reversal of 76471983971477 is 77417938917467.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50423760738961 + 26048223232516 = 7100969^2 + 5103746^2 .

It is an emirp because it is prime and its reverse (77417938917467) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76471983971477 - 2¹⁸ = 76471983709333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76471983971497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38235991985738 + 38235991985739.

It is an arithmetic number, because the mean of its divisors is an integer number (38235991985739).

Almost surely, 2^{76471983971477} is an apocalyptic number.

It is an amenable number.

76471983971477 is a deficient number, since it is larger than the sum of its proper divisors (1).

76471983971477 is an equidigital number, since it uses as much as digits as its factorization.

76471983971477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3136589568, while the sum is 80.

The spelling of 76471983971477 in words is "seventy-six trillion, four hundred seventy-one billion, nine hundred eighty-three million, nine hundred seventy-one thousand, four hundred seventy-seven".