1078854411515 has 16 divisors (see below), whose sum is σ = 1313943319200. Its totient is φ = 850233376512.

The previous prime is 1078854411461. The next prime is 1078854411521. The reversal of 1078854411515 is 5151144588701.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1078854411515 is a prime.

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, 1480145 + ... + 2085314.

It is an arithmetic number, because the mean of its divisors is an integer number (82121457450).

Almost surely, 2^{1078854411515} is an apocalyptic number.

1078854411515 is a deficient number, since it is larger than the sum of its proper divisors (235088907685).

1078854411515 is an equidigital number, since it uses as much as digits as its factorization.

1078854411515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3566366.

The product of its (nonzero) digits is 896000, while the sum is 50.

The spelling of 1078854411515 in words is "one trillion, seventy-eight billion, eight hundred fifty-four million, four hundred eleven thousand, five hundred fifteen".