1078503805305 has 24 divisors (see below), whose sum is σ = 1869435514752. Its totient is φ = 575193131424.

The previous prime is 1078503805303. The next prime is 1078503805343. The reversal of 1078503805305 is 5035083058701.

1078503805305 is a `hidden beast` number, since 1 + 0 + 7 + 85 + 0 + 38 + 0 + 530 + 5 = 666.

It is not a de Polignac number, because 1078503805305 - 2¹ = 1078503805303 is a prime.

It is a super-2 number, since 2×1078503805305² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1078503805303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3609642 + ... + 3896988.

It is an arithmetic number, because the mean of its divisors is an integer number (77893146448).

Almost surely, 2^{1078503805305} is an apocalyptic number.

1078503805305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1078503805305 is a deficient number, since it is larger than the sum of its proper divisors (790931709447).

1078503805305 is a wasteful number, since it uses less digits than its factorization.

1078503805305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370765 (or 370762 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 45.

The spelling of 1078503805305 in words is "one trillion, seventy-eight billion, five hundred three million, eight hundred five thousand, three hundred five".