633992042987 has 2 divisors, whose sum is σ = 633992042988. Its totient is φ = 633992042986.

The previous prime is 633992042947. The next prime is 633992042993. The reversal of 633992042987 is 789240299336.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 633992042987 - 2²⁰ = 633990994411 is a prime.

It is not a weakly prime, because it can be changed into another prime (633992042917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316996021493 + 316996021494.

It is an arithmetic number, because the mean of its divisors is an integer number (316996021494).

Almost surely, 2^633992042987 is an apocalyptic number.

633992042987 is a deficient number, since it is larger than the sum of its proper divisors (1).

633992042987 is an equidigital number, since it uses as much as digits as its factorization.

633992042987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35271936, while the sum is 62.

The spelling of 633992042987 in words is "six hundred thirty-three billion, nine hundred ninety-two million, forty-two thousand, nine hundred eighty-seven".