1521573141642 has 8 divisors (see below), whose sum is σ = 3043146283296. Its totient is φ = 507191047212.

The previous prime is 1521573141601. The next prime is 1521573141707. The reversal of 1521573141642 is 2461413751251.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

1521573141642 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1521573141594 and 1521573141603.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126797761798 + ... + 126797761809.

It is an arithmetic number, because the mean of its divisors is an integer number (380393285412).

Almost surely, 2^{1521573141642} is an apocalyptic number.

1521573141642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1521573141642 is a wasteful number, since it uses less digits than its factorization.

1521573141642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253595523612.

The product of its digits is 201600, while the sum is 42.

Adding to 1521573141642 its reverse (2461413751251), we get a palindrome (3982986892893).

The spelling of 1521573141642 in words is "one trillion, five hundred twenty-one billion, five hundred seventy-three million, one hundred forty-one thousand, six hundred forty-two".