1011216505515 has 8 divisors (see below), whose sum is σ = 1617946408848. Its totient is φ = 539315469600.

The previous prime is 1011216505513. The next prime is 1011216505583. The reversal of 1011216505515 is 5155056121101.

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

It is not a de Polignac number, because 1011216505515 - 2¹ = 1011216505513 is a prime.

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

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33707216836 + ... + 33707216865.

It is an arithmetic number, because the mean of its divisors is an integer number (202243301106).

Almost surely, 2^{1011216505515} is an apocalyptic number.

1011216505515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1011216505515 is a deficient number, since it is larger than the sum of its proper divisors (606729903333).

1011216505515 is an equidigital number, since it uses as much as digits as its factorization.

1011216505515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67414433709.

The product of its (nonzero) digits is 7500, while the sum is 33.

The spelling of 1011216505515 in words is "one trillion, eleven billion, two hundred sixteen million, five hundred five thousand, five hundred fifteen".