1155121503016 has 32 divisors (see below), whose sum is σ = 2367269684640. Its totient is φ = 525175789248.

The previous prime is 1155121502993. The next prime is 1155121503037. The reversal of 1155121503016 is 6103051215511.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82880626 + ... + 82894561.

It is an arithmetic number, because the mean of its divisors is an integer number (73977177645).

Almost surely, 2^{1155121503016} is an apocalyptic number.

It is an amenable number.

1155121503016 is an abundant number, since it is smaller than the sum of its proper divisors (1212148181624).

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

1155121503016 is a wasteful number, since it uses less digits than its factorization.

1155121503016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165775273 (or 165775269 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 31.

Adding to 1155121503016 its reverse (6103051215511), we get a palindrome (7258172718527).

The spelling of 1155121503016 in words is "one trillion, one hundred fifty-five billion, one hundred twenty-one million, five hundred three thousand, sixteen".