1315020020085 has 24 divisors (see below), whose sum is σ = 2285936845920. Its totient is φ = 699322838112.

The previous prime is 1315020020077. The next prime is 1315020020089. The reversal of 1315020020085 is 5800200205131.

It is a happy number.

1315020020085 is a `hidden beast` number, since 131 + 50 + 200 + 200 + 85 = 666.

It is not a de Polignac number, because 1315020020085 - 2³ = 1315020020077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315020020089) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42091975 + ... + 42123204.

It is an arithmetic number, because the mean of its divisors is an integer number (95247368580).

Almost surely, 2^{1315020020085} is an apocalyptic number.

1315020020085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1315020020085 is a deficient number, since it is larger than the sum of its proper divisors (970916825835).

1315020020085 is a wasteful number, since it uses less digits than its factorization.

1315020020085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84215537 (or 84215534 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The spelling of 1315020020085 in words is "one trillion, three hundred fifteen billion, twenty million, twenty thousand, eighty-five".