8145238927987 has 16 divisors (see below), whose sum is σ = 9337847313600. Its totient is φ = 6959887377408.

The previous prime is 8145238927979. The next prime is 8145238928003. The reversal of 8145238927987 is 7897298325418.

It is not a de Polignac number, because 8145238927987 - 2³ = 8145238927979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8145238927957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15923889 + ... + 16427437.

It is an arithmetic number, because the mean of its divisors is an integer number (583615457100).

Almost surely, 2^{8145238927987} is an apocalyptic number.

8145238927987 is a deficient number, since it is larger than the sum of its proper divisors (1192608385613).

8145238927987 is a wasteful number, since it uses less digits than its factorization.

8145238927987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510750.

The product of its digits is 487710720, while the sum is 73.

The spelling of 8145238927987 in words is "eight trillion, one hundred forty-five billion, two hundred thirty-eight million, nine hundred twenty-seven thousand, nine hundred eighty-seven".