1000216537542 has 32 divisors (see below), whose sum is σ = 2222749029600. Its totient is φ = 333398670624.

The previous prime is 1000216537517. The next prime is 1000216537561. The reversal of 1000216537542 is 2457356120001.

1000216537542 is a `hidden beast` number, since 1 + 0 + 0 + 0 + 21 + 65 + 37 + 542 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1000216537497 and 1000216537506.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2938084 + ... + 3260792.

It is an arithmetic number, because the mean of its divisors is an integer number (69460907175).

Almost surely, 2^{1000216537542} is an apocalyptic number.

1000216537542 is an abundant number, since it is smaller than the sum of its proper divisors (1222532492058).

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

1000216537542 is a wasteful number, since it uses less digits than its factorization.

1000216537542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380117 (or 380111 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 1000216537542 in words is "one trillion, two hundred sixteen million, five hundred thirty-seven thousand, five hundred forty-two".