1151113305520 has 40 divisors (see below), whose sum is σ = 2680060875840. Its totient is φ = 459804902400.

The previous prime is 1151113305509. The next prime is 1151113305533. The reversal of 1151113305520 is 255033111511.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9948681 + ... + 10063720.

It is an arithmetic number, because the mean of its divisors is an integer number (67001521896).

Almost surely, 2^{1151113305520} is an apocalyptic number.

1151113305520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1151113305520 is an abundant number, since it is smaller than the sum of its proper divisors (1528947570320).

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

1151113305520 is a wasteful number, since it uses less digits than its factorization.

1151113305520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20013133 (or 20013127 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 28.

The spelling of 1151113305520 in words is "one trillion, one hundred fifty-one billion, one hundred thirteen million, three hundred five thousand, five hundred twenty".