1200010523540 has 48 divisors (see below), whose sum is σ = 2527285516560. Its totient is φ = 478621731840.

The previous prime is 1200010523539. The next prime is 1200010523587. The reversal of 1200010523540 is 453250100021.

It can be written as a sum of positive squares in 8 ways, for example, as 364588931344 + 835421592196 = 603812^2 + 914014^2 .

It is a congruent number.

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, 19445774 + ... + 19507386.

It is an arithmetic number, because the mean of its divisors is an integer number (52651781595).

Almost surely, 2^{1200010523540} is an apocalyptic number.

1200010523540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200010523540 is an abundant number, since it is smaller than the sum of its proper divisors (1327274993020).

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

1200010523540 is a wasteful number, since it uses less digits than its factorization.

1200010523540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64412 (or 64410 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 1200010523540 its reverse (453250100021), we get a palindrome (1653260623561).

The spelling of 1200010523540 in words is "one trillion, two hundred billion, ten million, five hundred twenty-three thousand, five hundred forty".