1194897795552 has 144 divisors (see below), whose sum is σ = 3532824024912. Its totient is φ = 382784624640.

The previous prime is 1194897795551. The next prime is 1194897795599. The reversal of 1194897795552 is 2555977984911.

1194897795552 is a `hidden beast` number, since 1 + 1 + 9 + 489 + 7 + 7 + 95 + 5 + 52 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1194897795551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35958 + ... + 1546314.

It is an arithmetic number, because the mean of its divisors is an integer number (24533500173).

Almost surely, 2^{1194897795552} is an apocalyptic number.

1194897795552 is a gapful number since it is divisible by the number (12) 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 1194897795552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1766412012456).

1194897795552 is an abundant number, since it is smaller than the sum of its proper divisors (2337926229360).

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

1194897795552 is a wasteful number, since it uses less digits than its factorization.

1194897795552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510481 (or 1510470 counting only the distinct ones).

The product of its digits is 285768000, while the sum is 72.

The spelling of 1194897795552 in words is "one trillion, one hundred ninety-four billion, eight hundred ninety-seven million, seven hundred ninety-five thousand, five hundred fifty-two".