1011216505516 has 36 divisors (see below), whose sum is σ = 2043498314928. Its totient is φ = 428910571008.

The previous prime is 1011216505513. The next prime is 1011216505583. The reversal of 1011216505516 is 6155056121101.

It is not an unprimeable number, because it can be changed into a prime (1011216505513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1655715 + ... + 2182618.

Almost surely, 2^{1011216505516} is an apocalyptic number.

It is an amenable number.

1011216505516 is an abundant number, since it is smaller than the sum of its proper divisors (1032281809412).

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

1011216505516 is an equidigital number, since it uses as much as digits as its factorization.

1011216505516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3838538 (or 3838439 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 34.

The spelling of 1011216505516 in words is "one trillion, eleven billion, two hundred sixteen million, five hundred five thousand, five hundred sixteen".