1578025716172 has 12 divisors (see below), whose sum is σ = 2856770693280. Its totient is φ = 761805518096.

The previous prime is 1578025716151. The next prime is 1578025716173. The reversal of 1578025716172 is 2716175208751.

It is not an unprimeable number, because it can be changed into a prime (1578025716173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6801834868 + ... + 6801835099.

It is an arithmetic number, because the mean of its divisors is an integer number (238064224440).

Almost surely, 2^{1578025716172} is an apocalyptic number.

It is an amenable number.

1578025716172 is a deficient number, since it is larger than the sum of its proper divisors (1278744977108).

1578025716172 is a wasteful number, since it uses less digits than its factorization.

1578025716172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13603670000 (or 13603669998 counting only the distinct ones).

The product of its (nonzero) digits is 1646400, while the sum is 52.

The spelling of 1578025716172 in words is "one trillion, five hundred seventy-eight billion, twenty-five million, seven hundred sixteen thousand, one hundred seventy-two".