1550134339987 has 2 divisors, whose sum is σ = 1550134339988. Its totient is φ = 1550134339986.

The previous prime is 1550134339907. The next prime is 1550134339993. The reversal of 1550134339987 is 7899334310551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1550134339987 - 2²³ = 1550125951379 is a prime.

It is not a weakly prime, because it can be changed into another prime (1550134339907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775067169993 + 775067169994.

It is an arithmetic number, because the mean of its divisors is an integer number (775067169994).

Almost surely, 2^{1550134339987} is an apocalyptic number.

1550134339987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1550134339987 is an equidigital number, since it uses as much as digits as its factorization.

1550134339987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12247200, while the sum is 58.

The spelling of 1550134339987 in words is "one trillion, five hundred fifty billion, one hundred thirty-four million, three hundred thirty-nine thousand, nine hundred eighty-seven".