1191402567992 has 64 divisors (see below), whose sum is σ = 2750175556800. Its totient is φ = 471189519360.

The previous prime is 1191402567991. The next prime is 1191402568021. The reversal of 1191402567992 is 2997652041911.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191402567991) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 2337242 + ... + 2800982.

It is an arithmetic number, because the mean of its divisors is an integer number (42971493075).

Almost surely, 2^{1191402567992} is an apocalyptic number.

It is an amenable number.

1191402567992 is an abundant number, since it is smaller than the sum of its proper divisors (1558772988808).

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

1191402567992 is a wasteful number, since it uses less digits than its factorization.

1191402567992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467296 (or 467292 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 56.

The spelling of 1191402567992 in words is "one trillion, one hundred ninety-one billion, four hundred two million, five hundred sixty-seven thousand, nine hundred ninety-two".