1199450720650 has 96 divisors (see below), whose sum is σ = 2752740063360. Its totient is φ = 378649624320.

The previous prime is 1199450720639. The next prime is 1199450720651. The reversal of 1199450720650 is 560270549911.

It is a happy number.

It is a super-3 number, since 3×1199450720650³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1199450720594 and 1199450720603.

It is not an unprimeable number, because it can be changed into a prime (1199450720651) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1474341 + ... + 2138359.

It is an arithmetic number, because the mean of its divisors is an integer number (28674375660).

Almost surely, 2^{1199450720650} is an apocalyptic number.

1199450720650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1199450720650 is an abundant number, since it is smaller than the sum of its proper divisors (1553289342710).

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

1199450720650 is a wasteful number, since it uses less digits than its factorization.

1199450720650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664448 (or 664443 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 49.

The spelling of 1199450720650 in words is "one trillion, one hundred ninety-nine billion, four hundred fifty million, seven hundred twenty thousand, six hundred fifty".