1291161319932 has 24 divisors (see below), whose sum is σ = 3286592451072. Its totient is φ = 391261006000.

The previous prime is 1291161319897. The next prime is 1291161319933. The reversal of 1291161319932 is 2399131611921.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1291161319933) 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, 4890762444 + ... + 4890762707.

It is an arithmetic number, because the mean of its divisors is an integer number (136941352128).

Almost surely, 2^{1291161319932} is an apocalyptic number.

1291161319932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1291161319932 is an abundant number, since it is smaller than the sum of its proper divisors (1995431131140).

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

1291161319932 is a wasteful number, since it uses less digits than its factorization.

1291161319932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9781525169 (or 9781525167 counting only the distinct ones).

The product of its digits is 157464, while the sum is 48.

The spelling of 1291161319932 in words is "one trillion, two hundred ninety-one billion, one hundred sixty-one million, three hundred nineteen thousand, nine hundred thirty-two".