1996078165458 has 64 divisors (see below), whose sum is σ = 4560465732480. Its totient is φ = 576992812032.

The previous prime is 1996078165457. The next prime is 1996078165463. The reversal of 1996078165458 is 8545618706991.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1996078165392 and 1996078165401.

It is not an unprimeable number, because it can be changed into a prime (1996078165457) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 650673 + ... + 2101316.

It is an arithmetic number, because the mean of its divisors is an integer number (71257277070).

Almost surely, 2^{1996078165458} is an apocalyptic number.

1996078165458 is an abundant number, since it is smaller than the sum of its proper divisors (2564387567022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1996078165458 is a wasteful number, since it uses less digits than its factorization.

1996078165458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2752571.

The product of its (nonzero) digits is 130636800, while the sum is 69.

The spelling of 1996078165458 in words is "one trillion, nine hundred ninety-six billion, seventy-eight million, one hundred sixty-five thousand, four hundred fifty-eight".