133319999987 has 2 divisors, whose sum is σ = 133319999988. Its totient is φ = 133319999986.

The previous prime is 133319999971. The next prime is 133320000001. The reversal of 133319999987 is 789999913331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133319999987 - 2⁴ = 133319999971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133319999987.

It is not a weakly prime, because it can be changed into another prime (133319999947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66659999993 + 66659999994.

It is an arithmetic number, because the mean of its divisors is an integer number (66659999994).

Almost surely, 2^133319999987 is an apocalyptic number.

133319999987 is a deficient number, since it is larger than the sum of its proper divisors (1).

133319999987 is an equidigital number, since it uses as much as digits as its factorization.

133319999987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 89282088, while the sum is 71.

The spelling of 133319999987 in words is "one hundred thirty-three billion, three hundred nineteen million, nine hundred ninety-nine thousand, nine hundred eighty-seven".