400525064600987 has 2 divisors, whose sum is σ = 400525064600988. Its totient is φ = 400525064600986.

The previous prime is 400525064600977. The next prime is 400525064601091. The reversal of 400525064600987 is 789006460525004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400525064600987 - 2³⁰ = 400523990859163 is a prime.

It is not a weakly prime, because it can be changed into another prime (400525064600977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200262532300493 + 200262532300494.

It is an arithmetic number, because the mean of its divisors is an integer number (200262532300494).

Almost surely, 2^{400525064600987} is an apocalyptic number.

400525064600987 is a deficient number, since it is larger than the sum of its proper divisors (1).

400525064600987 is an equidigital number, since it uses as much as digits as its factorization.

400525064600987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14515200, while the sum is 56.

The spelling of 400525064600987 in words is "four hundred trillion, five hundred twenty-five billion, sixty-four million, six hundred thousand, nine hundred eighty-seven".