16135131155987 has 2 divisors, whose sum is σ = 16135131155988. Its totient is φ = 16135131155986.

The previous prime is 16135131155977. The next prime is 16135131156029. The reversal of 16135131155987 is 78955113153161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16135131155987 - 2¹² = 16135131151891 is a prime.

It is not a weakly prime, because it can be changed into another prime (16135131155977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8067565577993 + 8067565577994.

It is an arithmetic number, because the mean of its divisors is an integer number (8067565577994).

Almost surely, 2^{16135131155987} is an apocalyptic number.

16135131155987 is a deficient number, since it is larger than the sum of its proper divisors (1).

16135131155987 is an equidigital number, since it uses as much as digits as its factorization.

16135131155987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3402000, while the sum is 56.

The spelling of 16135131155987 in words is "sixteen trillion, one hundred thirty-five billion, one hundred thirty-one million, one hundred fifty-five thousand, nine hundred eighty-seven".