1200553151520 has 192 divisors, whose sum is σ = 3842804609280. Its totient is φ = 315017883648.

The previous prime is 1200553151471. The next prime is 1200553151543. The reversal of 1200553151520 is 251513550021.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7684746 + ... + 7839414.

It is an arithmetic number, because the mean of its divisors is an integer number (20014607340).

Almost surely, 2^{1200553151520} is an apocalyptic number.

1200553151520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200553151520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1921402304640).

1200553151520 is an abundant number, since it is smaller than the sum of its proper divisors (2642251457760).

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

1200553151520 is a wasteful number, since it uses less digits than its factorization.

1200553151520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154947 (or 154939 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 30.

The spelling of 1200553151520 in words is "one trillion, two hundred billion, five hundred fifty-three million, one hundred fifty-one thousand, five hundred twenty".