11197137432 has 128 divisors (see below), whose sum is σ = 31546791360. Its totient is φ = 3288729600.

The previous prime is 11197137407. The next prime is 11197137439. The reversal of 11197137432 is 23473179111.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11197137439) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 602682 + ... + 620982.

Almost surely, 2^11197137432 is an apocalyptic number.

11197137432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11197137432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15773395680).

11197137432 is an abundant number, since it is smaller than the sum of its proper divisors (20349653928).

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

11197137432 is a wasteful number, since it uses less digits than its factorization.

11197137432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18413 (or 18409 counting only the distinct ones).

The product of its digits is 31752, while the sum is 39.

The spelling of 11197137432 in words is "eleven billion, one hundred ninety-seven million, one hundred thirty-seven thousand, four hundred thirty-two".