1200010453520 has 40 divisors (see below), whose sum is σ = 2865430373784. Its totient is φ = 467031094272.

The previous prime is 1200010453459. The next prime is 1200010453529. The reversal of 1200010453520 is 253540100021.

It can be written as a sum of positive squares in 4 ways, for example, as 293226582016 + 906783871504 = 541504^2 + 952252^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1200010453529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202701509 + ... + 202707428.

Almost surely, 2^{1200010453520} is an apocalyptic number.

1200010453520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200010453520 is an abundant number, since it is smaller than the sum of its proper divisors (1665419920264).

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

1200010453520 is a wasteful number, since it uses less digits than its factorization.

1200010453520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405408987 (or 405408981 counting only the distinct ones).

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

Adding to 1200010453520 its reverse (253540100021), we get a palindrome (1453550553541).

The spelling of 1200010453520 in words is "one trillion, two hundred billion, ten million, four hundred fifty-three thousand, five hundred twenty".