1577221442146 has 16 divisors (see below), whose sum is σ = 2766687447744. Its totient is φ = 660232231344.

The previous prime is 1577221442119. The next prime is 1577221442161. The reversal of 1577221442146 is 6412441227751.

It is a junction number, because it is equal to n+sod(n) for n = 1577221442096 and 1577221442105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1309983985 + ... + 1309985188.

It is an arithmetic number, because the mean of its divisors is an integer number (172917965484).

Almost surely, 2^{1577221442146} is an apocalyptic number.

1577221442146 is a deficient number, since it is larger than the sum of its proper divisors (1189466005598).

1577221442146 is a wasteful number, since it uses less digits than its factorization.

1577221442146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2619969225.

The product of its digits is 752640, while the sum is 46.

Adding to 1577221442146 its reverse (6412441227751), we get a palindrome (7989662669897).

The spelling of 1577221442146 in words is "one trillion, five hundred seventy-seven billion, two hundred twenty-one million, four hundred forty-two thousand, one hundred forty-six".