1163636712042 has 128 divisors (see below), whose sum is σ = 2754319847424. Its totient is φ = 320803296768.

The previous prime is 1163636712019. The next prime is 1163636712047. The reversal of 1163636712042 is 2402176363611.

It is a super-2 number, since 2×1163636712042² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 1163636711985 and 1163636712003.

It is not an unprimeable number, because it can be changed into a prime (1163636712047) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 123353358 + ... + 123362790.

It is an arithmetic number, because the mean of its divisors is an integer number (21518123808).

Almost surely, 2^{1163636712042} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1163636712042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1377159923712).

1163636712042 is an abundant number, since it is smaller than the sum of its proper divisors (1590683135382).

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

1163636712042 is a wasteful number, since it uses less digits than its factorization.

1163636712042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10132.

The product of its (nonzero) digits is 217728, while the sum is 42.

The spelling of 1163636712042 in words is "one trillion, one hundred sixty-three billion, six hundred thirty-six million, seven hundred twelve thousand, forty-two".