1163642724872 has 8 divisors (see below), whose sum is σ = 2181830109150. Its totient is φ = 581821362432.

The previous prime is 1163642724869. The next prime is 1163642724899. The reversal of 1163642724872 is 2784272463611.

It can be written as a sum of positive squares in only one way, i.e., 669526516516 + 494116208356 = 818246^2 + 702934^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×1163642724872³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72727670297 + ... + 72727670312.

Almost surely, 2^{1163642724872} is an apocalyptic number.

It is an amenable number.

1163642724872 is a deficient number, since it is larger than the sum of its proper divisors (1018187384278).

1163642724872 is a wasteful number, since it uses less digits than its factorization.

1163642724872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145455340615 (or 145455340611 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 53.

The spelling of 1163642724872 in words is "one trillion, one hundred sixty-three billion, six hundred forty-two million, seven hundred twenty-four thousand, eight hundred seventy-two".