1005155601065 has 16 divisors (see below), whose sum is σ = 1503817211520. Its totient is φ = 626590504320.

The previous prime is 1005155601019. The next prime is 1005155601091. The reversal of 1005155601065 is 5601065515001.

1005155601065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-1005155601065 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1305396500 + ... + 1305397269.

It is an arithmetic number, because the mean of its divisors is an integer number (93988575720).

Almost surely, 2^{1005155601065} is an apocalyptic number.

It is an amenable number.

1005155601065 is a deficient number, since it is larger than the sum of its proper divisors (498661610455).

1005155601065 is a wasteful number, since it uses less digits than its factorization.

1005155601065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2610793792.

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 1005155601065 in words is "one trillion, five billion, one hundred fifty-five million, six hundred one thousand, sixty-five".