1129978974481 has 4 divisors (see below), whose sum is σ = 1291404542272. Its totient is φ = 968553406692.

The previous prime is 1129978974451. The next prime is 1129978974493. The reversal of 1129978974481 is 1844798799211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1129978974481 - 2¹¹ = 1129978972433 is a prime.

It is a super-2 number, since 2×1129978974481² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1129978974481.

It is not an unprimeable number, because it can be changed into a prime (1129978974451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80712783885 + ... + 80712783898.

It is an arithmetic number, because the mean of its divisors is an integer number (322851135568).

Almost surely, 2^{1129978974481} is an apocalyptic number.

It is an amenable number.

1129978974481 is a deficient number, since it is larger than the sum of its proper divisors (161425567791).

1129978974481 is an equidigital number, since it uses as much as digits as its factorization.

1129978974481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161425567790.

The product of its digits is 73156608, while the sum is 70.

The spelling of 1129978974481 in words is "one trillion, one hundred twenty-nine billion, nine hundred seventy-eight million, nine hundred seventy-four thousand, four hundred eighty-one".