287978483537 has 2 divisors, whose sum is σ = 287978483538. Its totient is φ = 287978483536.

The previous prime is 287978483483. The next prime is 287978483543. The reversal of 287978483537 is 735384879782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203855862016 + 84122621521 = 451504^2 + 290039^2 .

It is a cyclic number.

It is not a de Polignac number, because 287978483537 - 2⁶ = 287978483473 is a prime.

It is not a weakly prime, because it can be changed into another prime (287978483557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143989241768 + 143989241769.

It is an arithmetic number, because the mean of its divisors is an integer number (143989241769).

Almost surely, 2^287978483537 is an apocalyptic number.

It is an amenable number.

287978483537 is a deficient number, since it is larger than the sum of its proper divisors (1).

287978483537 is an equidigital number, since it uses as much as digits as its factorization.

287978483537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 568995840, while the sum is 71.

The spelling of 287978483537 in words is "two hundred eighty-seven billion, nine hundred seventy-eight million, four hundred eighty-three thousand, five hundred thirty-seven".