1078434157993 has 2 divisors, whose sum is σ = 1078434157994. Its totient is φ = 1078434157992.

The previous prime is 1078434157967. The next prime is 1078434158033. The reversal of 1078434157993 is 3997514348701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1061336764944 + 17097393049 = 1030212^2 + 130757^2 .

It is a cyclic number.

It is not a de Polignac number, because 1078434157993 - 2²⁹ = 1077897287081 is a prime.

It is not a weakly prime, because it can be changed into another prime (1078434157963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539217078996 + 539217078997.

It is an arithmetic number, because the mean of its divisors is an integer number (539217078997).

Almost surely, 2^{1078434157993} is an apocalyptic number.

It is an amenable number.

1078434157993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1078434157993 is an equidigital number, since it uses as much as digits as its factorization.

1078434157993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22861440, while the sum is 61.

The spelling of 1078434157993 in words is "one trillion, seventy-eight billion, four hundred thirty-four million, one hundred fifty-seven thousand, nine hundred ninety-three".