1156253123432 has 64 divisors (see below), whose sum is σ = 2381993792640. Its totient is φ = 521812512000.

The previous prime is 1156253123419. The next prime is 1156253123479. The reversal of 1156253123432 is 2343213526511.

It is an unprimeable number.

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, 17942453 + ... + 18006779.

It is an arithmetic number, because the mean of its divisors is an integer number (37218653010).

Almost surely, 2^{1156253123432} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1156253123432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1190996896320).

1156253123432 is an abundant number, since it is smaller than the sum of its proper divisors (1225740669208).

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

1156253123432 is a wasteful number, since it uses less digits than its factorization.

1156253123432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65802 (or 65798 counting only the distinct ones).

The product of its digits is 129600, while the sum is 38.

Adding to 1156253123432 its reverse (2343213526511), we get a palindrome (3499466649943).

The spelling of 1156253123432 in words is "one trillion, one hundred fifty-six billion, two hundred fifty-three million, one hundred twenty-three thousand, four hundred thirty-two".