1578990874128 has 80 divisors (see below), whose sum is σ = 4393713831936. Its totient is φ = 487206149760.

The previous prime is 1578990874127. The next prime is 1578990874141. The reversal of 1578990874128 is 8214780998751.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is not an unprimeable number, because it can be changed into a prime (1578990874127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23034250 + ... + 23102697.

Almost surely, 2^{1578990874128} is an apocalyptic number.

It is an amenable number.

1578990874128 is an abundant number, since it is smaller than the sum of its proper divisors (2814722957808).

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

1578990874128 is a wasteful number, since it uses less digits than its factorization.

1578990874128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46137012 (or 46137006 counting only the distinct ones).

The product of its (nonzero) digits is 81285120, while the sum is 69.

The spelling of 1578990874128 in words is "one trillion, five hundred seventy-eight billion, nine hundred ninety million, eight hundred seventy-four thousand, one hundred twenty-eight".