1578204258947 has 8 divisors (see below), whose sum is σ = 1596993239520. Its totient is φ = 1559438752960.

The previous prime is 1578204258919. The next prime is 1578204258973. The reversal of 1578204258947 is 7498524028751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1578204258947 - 2⁸ = 1578204258691 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 1578204258947.

It is not an unprimeable number, because it can be changed into a prime (1578204258907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5733368 + ... + 6002325.

It is an arithmetic number, because the mean of its divisors is an integer number (199624154940).

Almost surely, 2^{1578204258947} is an apocalyptic number.

1578204258947 is a deficient number, since it is larger than the sum of its proper divisors (18788980573).

1578204258947 is a wasteful number, since it uses less digits than its factorization.

1578204258947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11737293.

The product of its (nonzero) digits is 45158400, while the sum is 62.

The spelling of 1578204258947 in words is "one trillion, five hundred seventy-eight billion, two hundred four million, two hundred fifty-eight thousand, nine hundred forty-seven".