1078865321405 has 16 divisors (see below), whose sum is σ = 1371618054144. Its totient is φ = 811833550080.

The previous prime is 1078865321383. The next prime is 1078865321423. The reversal of 1078865321405 is 5041235688701.

It is not a de Polignac number, because 1078865321405 - 2³⁴ = 1061685452221 is a prime.

It is a Duffinian number.

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, 3674801 + ... + 3957510.

It is an arithmetic number, because the mean of its divisors is an integer number (85726128384).

Almost surely, 2^{1078865321405} is an apocalyptic number.

It is an amenable number.

1078865321405 is a deficient number, since it is larger than the sum of its proper divisors (292752732739).

1078865321405 is a wasteful number, since it uses less digits than its factorization.

1078865321405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7633996.

The product of its (nonzero) digits is 1612800, while the sum is 50.

The spelling of 1078865321405 in words is "one trillion, seventy-eight billion, eight hundred sixty-five million, three hundred twenty-one thousand, four hundred five".