461312639987 has 2 divisors, whose sum is σ = 461312639988. Its totient is φ = 461312639986.

The previous prime is 461312639929. The next prime is 461312640031. The reversal of 461312639987 is 789936213164.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 461312639987 - 2¹⁸ = 461312377843 is a prime.

It is not a weakly prime, because it can be changed into another prime (461312639927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230656319993 + 230656319994.

It is an arithmetic number, because the mean of its divisors is an integer number (230656319994).

Almost surely, 2^461312639987 is an apocalyptic number.

461312639987 is a deficient number, since it is larger than the sum of its proper divisors (1).

461312639987 is an equidigital number, since it uses as much as digits as its factorization.

461312639987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11757312, while the sum is 59.

The spelling of 461312639987 in words is "four hundred sixty-one billion, three hundred twelve million, six hundred thirty-nine thousand, nine hundred eighty-seven".