11203400553444 has 72 divisors (see below), whose sum is σ = 31177659152640. Its totient is φ = 3363823339200.

The previous prime is 11203400553437. The next prime is 11203400553451. The reversal of 11203400553444 is 44435500430211.

11203400553444 is a `hidden beast` number, since 1 + 1 + 20 + 3 + 40 + 0 + 553 + 4 + 44 = 666.

It is an interprime number because it is at equal distance from previous prime (11203400553437) and next prime (11203400553451).

It is a super-2 number, since 2×11203400553444² (a number of 27 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 11203400553399 and 11203400553408.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129733972 + ... + 129820299.

Almost surely, 2^{11203400553444} is an apocalyptic number.

It is an amenable number.

11203400553444 is an abundant number, since it is smaller than the sum of its proper divisors (19974258599196).

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

11203400553444 is a wasteful number, since it uses less digits than its factorization.

11203400553444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259554401 (or 259554396 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 11203400553444 its reverse (44435500430211), we get a palindrome (55638900983655).

The spelling of 11203400553444 in words is "eleven trillion, two hundred three billion, four hundred million, five hundred fifty-three thousand, four hundred forty-four".