1155420332520 has 64 divisors (see below), whose sum is σ = 3550803963840. Its totient is φ = 300597158400.

The previous prime is 1155420332497. The next prime is 1155420332537. The reversal of 1155420332520 is 252330245511.

It is a super-2 number, since 2×1155420332520² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117415846 + ... + 117425685.

It is an arithmetic number, because the mean of its divisors is an integer number (55481311935).

Almost surely, 2^{1155420332520} is an apocalyptic number.

1155420332520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155420332520 is an abundant number, since it is smaller than the sum of its proper divisors (2395383631320).

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

1155420332520 is a wasteful number, since it uses less digits than its factorization.

1155420332520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234841586 (or 234841582 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

The spelling of 1155420332520 in words is "one trillion, one hundred fifty-five billion, four hundred twenty million, three hundred thirty-two thousand, five hundred twenty".