1020540011500 has 24 divisors (see below), whose sum is σ = 2228859386208. Its totient is φ = 408216004400.

The previous prime is 1020540011467. The next prime is 1020540011507. The reversal of 1020540011500 is 51100450201.

It is not an unprimeable number, because it can be changed into a prime (1020540011507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1020539512 + ... + 1020540511.

It is an arithmetic number, because the mean of its divisors is an integer number (92869141092).

Almost surely, 2^{1020540011500} is an apocalyptic number.

1020540011500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020540011500 is an abundant number, since it is smaller than the sum of its proper divisors (1208319374708).

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

1020540011500 is a wasteful number, since it uses less digits than its factorization.

1020540011500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041080042 (or 2041080030 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

Adding to 1020540011500 its reverse (51100450201), we get a palindrome (1071640461701).

The spelling of 1020540011500 in words is "one trillion, twenty billion, five hundred forty million, eleven thousand, five hundred".