11154545450 has 24 divisors (see below), whose sum is σ = 20768110860. Its totient is φ = 4457376000.

The previous prime is 11154545447. The next prime is 11154545459. The reversal of 11154545450 is 5454545111.

It can be written as a sum of positive squares in 6 ways, for example, as 887384521 + 10267160929 = 29789^2 + 101327^2 .

It is a super-2 number, since 2×11154545450² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11154545450.

It is not an unprimeable number, because it can be changed into a prime (11154545459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60101 + ... + 161000.

Almost surely, 2^11154545450 is an apocalyptic number.

11154545450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11154545450 is a deficient number, since it is larger than the sum of its proper divisors (9613565410).

11154545450 is a wasteful number, since it uses less digits than its factorization.

11154545450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222122 (or 222117 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 35.

The spelling of 11154545450 in words is "eleven billion, one hundred fifty-four million, five hundred forty-five thousand, four hundred fifty".