1131504065020 has 48 divisors (see below), whose sum is σ = 2715772183488. Its totient is φ = 387921047040.

The previous prime is 1131504065011. The next prime is 1131504065023. The reversal of 1131504065020 is 205604051311.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 1131504065020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131504065023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2194704 + ... + 2660776.

It is an arithmetic number, because the mean of its divisors is an integer number (56578587156).

Almost surely, 2^{1131504065020} is an apocalyptic number.

1131504065020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131504065020 is an abundant number, since it is smaller than the sum of its proper divisors (1584268118468).

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

1131504065020 is a wasteful number, since it uses less digits than its factorization.

1131504065020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483430 (or 483428 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The spelling of 1131504065020 in words is "one trillion, one hundred thirty-one billion, five hundred four million, sixty-five thousand, twenty".