1005115405655 has 16 divisors (see below), whose sum is σ = 1207366542720. Its totient is φ = 803273848608.

The previous prime is 1005115405513. The next prime is 1005115405681. The reversal of 1005115405655 is 5565045115001.

It is a cyclic number.

It is not a de Polignac number, because 1005115405655 - 2¹⁸ = 1005115143511 is a prime.

It is a congruent number.

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, 57693536 + ... + 57710954.

It is an arithmetic number, because the mean of its divisors is an integer number (75460408920).

Almost surely, 2^{1005115405655} is an apocalyptic number.

1005115405655 is a deficient number, since it is larger than the sum of its proper divisors (202251137065).

1005115405655 is a wasteful number, since it uses less digits than its factorization.

1005115405655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28510.

The product of its (nonzero) digits is 75000, while the sum is 38.

The spelling of 1005115405655 in words is "one trillion, five billion, one hundred fifteen million, four hundred five thousand, six hundred fifty-five".