1155420052000 has 48 divisors (see below), whose sum is σ = 2838867077592. Its totient is φ = 462168019200.

The previous prime is 1155420051991. The next prime is 1155420052037. The reversal of 1155420052000 is 2500245511.

It can be written as a sum of positive squares in 4 ways, for example, as 175296291856 + 980123760144 = 418684^2 + 990012^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 144423507 + ... + 144431506.

Almost surely, 2^{1155420052000} is an apocalyptic number.

1155420052000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155420052000 is an abundant number, since it is smaller than the sum of its proper divisors (1683447025592).

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

1155420052000 is an equidigital number, since it uses as much as digits as its factorization.

1155420052000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288855038 (or 288855020 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

Adding to 1155420052000 its reverse (2500245511), we get a palindrome (1157920297511).

The spelling of 1155420052000 in words is "one trillion, one hundred fifty-five billion, four hundred twenty million, fifty-two thousand".