1564145614442 has 32 divisors (see below), whose sum is σ = 2383909071120. Its totient is φ = 769617100800.

The previous prime is 1564145614411. The next prime is 1564145614453. The reversal of 1564145614442 is 2444165414651.

It can be written as a sum of positive squares in 8 ways, for example, as 1560048462361 + 4097152081 = 1249019^2 + 64009^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23691734 + ... + 23757662.

Almost surely, 2^{1564145614442} is an apocalyptic number.

1564145614442 is a deficient number, since it is larger than the sum of its proper divisors (819763456678).

1564145614442 is a wasteful number, since it uses less digits than its factorization.

1564145614442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66746.

The product of its digits is 1843200, while the sum is 47.

The spelling of 1564145614442 in words is "one trillion, five hundred sixty-four billion, one hundred forty-five million, six hundred fourteen thousand, four hundred forty-two".