1129016915985 has 32 divisors (see below), whose sum is σ = 2065186812672. Its totient is φ = 515947334400.

The previous prime is 1129016915947. The next prime is 1129016915989. The reversal of 1129016915985 is 5895196109211.

It is not a de Polignac number, because 1129016915985 - 2⁷ = 1129016915857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1129016915989) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1507666 + ... + 2128635.

It is an arithmetic number, because the mean of its divisors is an integer number (64537087896).

Almost surely, 2^{1129016915985} is an apocalyptic number.

1129016915985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1129016915985 is a deficient number, since it is larger than the sum of its proper divisors (936169896687).

1129016915985 is a wasteful number, since it uses less digits than its factorization.

1129016915985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3639273.

The product of its (nonzero) digits is 1749600, while the sum is 57.

The spelling of 1129016915985 in words is "one trillion, one hundred twenty-nine billion, sixteen million, nine hundred fifteen thousand, nine hundred eighty-five".