1078217386355 has 4 divisors (see below), whose sum is σ = 1293860863632. Its totient is φ = 862573909080.

The previous prime is 1078217386339. The next prime is 1078217386381. The reversal of 1078217386355 is 5536837128701.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1078217386355 - 2⁴ = 1078217386339 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1078217386355.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107821738631 + ... + 107821738640.

It is an arithmetic number, because the mean of its divisors is an integer number (323465215908).

Almost surely, 2^{1078217386355} is an apocalyptic number.

1078217386355 is a deficient number, since it is larger than the sum of its proper divisors (215643477277).

1078217386355 is an equidigital number, since it uses as much as digits as its factorization.

1078217386355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215643477276.

The product of its (nonzero) digits is 8467200, while the sum is 56.

The spelling of 1078217386355 in words is "one trillion, seventy-eight billion, two hundred seventeen million, three hundred eighty-six thousand, three hundred fifty-five".