1200045540520 has 64 divisors (see below), whose sum is σ = 2758478976000. Its totient is φ = 469747719168.

The previous prime is 1200045540391. The next prime is 1200045540523. The reversal of 1200045540520 is 250455400021.

It is not an unprimeable number, because it can be changed into a prime (1200045540523) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1323280 + ... + 2037439.

It is an arithmetic number, because the mean of its divisors is an integer number (43101234000).

Almost surely, 2^{1200045540520} is an apocalyptic number.

1200045540520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200045540520 is an abundant number, since it is smaller than the sum of its proper divisors (1558433435480).

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

1200045540520 is a wasteful number, since it uses less digits than its factorization.

1200045540520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3360922 (or 3360918 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The spelling of 1200045540520 in words is "one trillion, two hundred billion, forty-five million, five hundred forty thousand, five hundred twenty".