1161727603722 has 576 divisors, whose sum is σ = 3352225443840. Its totient is φ = 291497107968.

The previous prime is 1161727603717. The next prime is 1161727603801. The reversal of 1161727603722 is 2273067271611.

1161727603722 is a `hidden beast` number, since 1 + 1 + 6 + 1 + 7 + 276 + 0 + 372 + 2 = 666.

It is a super-2 number, since 2×1161727603722² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 11278908723 + ... + 11278908825.

It is an arithmetic number, because the mean of its divisors is an integer number (5819835840).

Almost surely, 2^{1161727603722} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1161727603722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1676112721920).

1161727603722 is an abundant number, since it is smaller than the sum of its proper divisors (2190497840118).

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

1161727603722 is a wasteful number, since it uses less digits than its factorization.

1161727603722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The spelling of 1161727603722 in words is "one trillion, one hundred sixty-one billion, seven hundred twenty-seven million, six hundred three thousand, seven hundred twenty-two".