1201795563520 has 136 divisors (see below), whose sum is σ = 3036107672640. Its totient is φ = 455414906880.

The previous prime is 1201795563517. The next prime is 1201795563547. The reversal of 1201795563520 is 253655971021.

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, 6129405 + ... + 6322435.

Almost surely, 2^{1201795563520} is an apocalyptic number.

1201795563520 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 1201795563520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1518053836320).

1201795563520 is an abundant number, since it is smaller than the sum of its proper divisors (1834312109120).

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

1201795563520 is an frugal number, since it uses more digits than its factorization.

1201795563520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193087 (or 193057 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 46.

The spelling of 1201795563520 in words is "one trillion, two hundred one billion, seven hundred ninety-five million, five hundred sixty-three thousand, five hundred twenty".