1190591978128 has 60 divisors (see below), whose sum is σ = 2694904886700. Its totient is φ = 508063696896.

The previous prime is 1190591978123. The next prime is 1190591978159. The reversal of 1190591978128 is 8218791950911.

It can be written as a sum of positive squares in 2 ways, for example, as 751675128064 + 438916850064 = 866992^2 + 662508^2 .

It is not an unprimeable number, because it can be changed into a prime (1190591978123) 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, 3076153 + ... + 3441496.

It is an arithmetic number, because the mean of its divisors is an integer number (44915081445).

Almost surely, 2^{1190591978128} is an apocalyptic number.

It is an amenable number.

1190591978128 is an abundant number, since it is smaller than the sum of its proper divisors (1504312908572).

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

1190591978128 is a wasteful number, since it uses less digits than its factorization.

1190591978128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6517904 (or 6517891 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 61.

The spelling of 1190591978128 in words is "one trillion, one hundred ninety billion, five hundred ninety-one million, nine hundred seventy-eight thousand, one hundred twenty-eight".