11142554436 has 72 divisors (see below), whose sum is σ = 30748117400. Its totient is φ = 3381502464.

The previous prime is 11142554431. The next prime is 11142554453. The reversal of 11142554436 is 63445524111.

It can be written as a sum of positive squares in 4 ways, for example, as 273240900 + 10869313536 = 16530^2 + 104256^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 11142554436.

It is not an unprimeable number, because it can be changed into a prime (11142554431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128911 + ... + 197238.

Almost surely, 2^11142554436 is an apocalyptic number.

It is an amenable number.

11142554436 is an abundant number, since it is smaller than the sum of its proper divisors (19605562964).

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

11142554436 is a wasteful number, since it uses less digits than its factorization.

11142554436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326245 (or 326240 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The spelling of 11142554436 in words is "eleven billion, one hundred forty-two million, five hundred fifty-four thousand, four hundred thirty-six".