1487946497777 has 2 divisors, whose sum is σ = 1487946497778. Its totient is φ = 1487946497776.

The previous prime is 1487946497753. The next prime is 1487946497803. The reversal of 1487946497777 is 7777946497841.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1273266248881 + 214680248896 = 1128391^2 + 463336^2 .

It is a cyclic number.

It is not a de Polignac number, because 1487946497777 - 2¹⁴ = 1487946481393 is a prime.

It is not a weakly prime, because it can be changed into another prime (1487946497677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 743973248888 + 743973248889.

It is an arithmetic number, because the mean of its divisors is an integer number (743973248889).

Almost surely, 2^{1487946497777} is an apocalyptic number.

It is an amenable number.

1487946497777 is a deficient number, since it is larger than the sum of its proper divisors (1).

1487946497777 is an equidigital number, since it uses as much as digits as its factorization.

1487946497777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4182119424, while the sum is 80.

The spelling of 1487946497777 in words is "one trillion, four hundred eighty-seven billion, nine hundred forty-six million, four hundred ninety-seven thousand, seven hundred seventy-seven".