1161363638650 has 24 divisors (see below), whose sum is σ = 2218518435420. Its totient is φ = 451990172160.

The previous prime is 1161363638647. The next prime is 1161363638651. The reversal of 1161363638650 is 568363631611.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 512580106809 + 648783531841 = 715947^2 + 805471^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1161363638594 and 1161363638603.

It is not an unprimeable number, because it can be changed into a prime (1161363638651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 313880215 + ... + 313883914.

Almost surely, 2^{1161363638650} is an apocalyptic number.

1161363638650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1161363638650 is a deficient number, since it is larger than the sum of its proper divisors (1057154796770).

1161363638650 is a wasteful number, since it uses less digits than its factorization.

1161363638650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627764178 (or 627764173 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 49.

The spelling of 1161363638650 in words is "one trillion, one hundred sixty-one billion, three hundred sixty-three million, six hundred thirty-eight thousand, six hundred fifty".