1208535985920 has 72 divisors (see below), whose sum is σ = 3859761817296. Its totient is φ = 322276261888.

The previous prime is 1208535985913. The next prime is 1208535986029. The reversal of 1208535985920 is 295895358021.

It is a happy number.

It is a congruent number.

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, 157357617 + ... + 157365296.

It is an arithmetic number, because the mean of its divisors is an integer number (53607803018).

Almost surely, 2^{1208535985920} is an apocalyptic number.

1208535985920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1208535985920 is an abundant number, since it is smaller than the sum of its proper divisors (2651225831376).

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

1208535985920 is an equidigital number, since it uses as much as digits as its factorization.

1208535985920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314722937 (or 314722923 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 57.

The spelling of 1208535985920 in words is "one trillion, two hundred eight billion, five hundred thirty-five million, nine hundred eighty-five thousand, nine hundred twenty".