1578045071628 has 96 divisors (see below), whose sum is σ = 4432630245120. Its totient is φ = 483559614720.

The previous prime is 1578045071623. The next prime is 1578045071651. The reversal of 1578045071628 is 8261705408751.

1578045071628 is a `hidden beast` number, since 1 + 5 + 7 + 8 + 0 + 4 + 5 + 0 + 7 + 1 + 628 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1578045071623) 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, 9915258 + ... + 10073153.

It is an arithmetic number, because the mean of its divisors is an integer number (46173231720).

Almost surely, 2^{1578045071628} is an apocalyptic number.

1578045071628 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1578045071628 is an abundant number, since it is smaller than the sum of its proper divisors (2854585173492).

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

1578045071628 is a wasteful number, since it uses less digits than its factorization.

1578045071628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19988484 (or 19988476 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 54.

The spelling of 1578045071628 in words is "one trillion, five hundred seventy-eight billion, forty-five million, seventy-one thousand, six hundred twenty-eight".