1521543350442 has 32 divisors (see below), whose sum is σ = 3222165312000. Its totient is φ = 477336043008.

The previous prime is 1521543350423. The next prime is 1521543350443. The reversal of 1521543350442 is 2440533451251.

It is a self number, because there is not a number n which added to its sum of digits gives 1521543350442.

It is not an unprimeable number, because it can be changed into a prime (1521543350443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5126934 + ... + 5415582.

It is an arithmetic number, because the mean of its divisors is an integer number (100692666000).

Almost surely, 2^{1521543350442} is an apocalyptic number.

1521543350442 is an abundant number, since it is smaller than the sum of its proper divisors (1700621961558).

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

1521543350442 is a wasteful number, since it uses less digits than its factorization.

1521543350442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340350.

The product of its (nonzero) digits is 288000, while the sum is 39.

The spelling of 1521543350442 in words is "one trillion, five hundred twenty-one billion, five hundred forty-three million, three hundred fifty thousand, four hundred forty-two".