172487989963 has 2 divisors, whose sum is σ = 172487989964. Its totient is φ = 172487989962.

The previous prime is 172487989889. The next prime is 172487990009. The reversal of 172487989963 is 369989784271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172487989963 - 2²⁹ = 171951119051 is a prime.

It is not a weakly prime, because it can be changed into another prime (172487989463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86243994981 + 86243994982.

It is an arithmetic number, because the mean of its divisors is an integer number (86243994982).

Almost surely, 2^172487989963 is an apocalyptic number.

172487989963 is a deficient number, since it is larger than the sum of its proper divisors (1).

172487989963 is an equidigital number, since it uses as much as digits as its factorization.

172487989963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 329204736, while the sum is 73.

The spelling of 172487989963 in words is "one hundred seventy-two billion, four hundred eighty-seven million, nine hundred eighty-nine thousand, nine hundred sixty-three".