1191591096590 has 16 divisors (see below), whose sum is σ = 2144981464272. Its totient is φ = 476610329664.

The previous prime is 1191591096541. The next prime is 1191591096599. The reversal of 1191591096590 is 956901951911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191591096599) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3071399 + ... + 3437538.

It is an arithmetic number, because the mean of its divisors is an integer number (134061341517).

Almost surely, 2^{1191591096590} is an apocalyptic number.

1191591096590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1191591096590 is a deficient number, since it is larger than the sum of its proper divisors (953390367682).

1191591096590 is a wasteful number, since it uses less digits than its factorization.

1191591096590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6527251.

The product of its (nonzero) digits is 984150, while the sum is 56.

The spelling of 1191591096590 in words is "one trillion, one hundred ninety-one billion, five hundred ninety-one million, ninety-six thousand, five hundred ninety".