1191412025579 has 4 divisors (see below), whose sum is σ = 1191477617640. Its totient is φ = 1191346433520.

The previous prime is 1191412025543. The next prime is 1191412025581. The reversal of 1191412025579 is 9755202141911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1191412025579 - 2¹² = 1191412021483 is a prime.

It is a super-2 number, since 2×1191412025579² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1191412025519) 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, 32768777 + ... + 32805114.

It is an arithmetic number, because the mean of its divisors is an integer number (297869404410).

Almost surely, 2^{1191412025579} is an apocalyptic number.

1191412025579 is a deficient number, since it is larger than the sum of its proper divisors (65592061).

1191412025579 is an equidigital number, since it uses as much as digits as its factorization.

1191412025579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65592060.

The product of its (nonzero) digits is 226800, while the sum is 47.

The spelling of 1191412025579 in words is "one trillion, one hundred ninety-one billion, four hundred twelve million, twenty-five thousand, five hundred seventy-nine".