1155542488870 has 64 divisors (see below), whose sum is σ = 2729702592000. Its totient is φ = 341212815360.

The previous prime is 1155542488831. The next prime is 1155542488883. The reversal of 1155542488870 is 788842455511.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39477595 + ... + 39506854.

It is an arithmetic number, because the mean of its divisors is an integer number (42651603000).

Almost surely, 2^{1155542488870} is an apocalyptic number.

1155542488870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1155542488870 is an abundant number, since it is smaller than the sum of its proper divisors (1574160103130).

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

1155542488870 is a wasteful number, since it uses less digits than its factorization.

1155542488870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78984493.

The product of its (nonzero) digits is 14336000, while the sum is 58.

The spelling of 1155542488870 in words is "one trillion, one hundred fifty-five billion, five hundred forty-two million, four hundred eighty-eight thousand, eight hundred seventy".