11213435551554 has 12 divisors (see below), whose sum is σ = 24295777028406. Its totient is φ = 3737811850512.

The previous prime is 11213435551547. The next prime is 11213435551561. The reversal of 11213435551554 is 45515553431211.

11213435551554 is a `hidden beast` number, since 1 + 1 + 2 + 1 + 3 + 43 + 5 + 5 + 51 + 554 = 666.

It is an interprime number because it is at equal distance from previous prime (11213435551547) and next prime (11213435551561).

It can be written as a sum of positive squares in only one way, i.e., 8238421170225 + 2975014381329 = 2870265^2 + 1724823^2 .

It is a super-2 number, since 2×11213435551554² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 311484320859 + ... + 311484320894.

Almost surely, 2^{11213435551554} is an apocalyptic number.

11213435551554 is an abundant number, since it is smaller than the sum of its proper divisors (13082341476852).

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

11213435551554 is a wasteful number, since it uses less digits than its factorization.

11213435551554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622968641761 (or 622968641758 counting only the distinct ones).

The product of its digits is 900000, while the sum is 45.

Adding to 11213435551554 its reverse (45515553431211), we get a palindrome (56728988982765).

The spelling of 11213435551554 in words is "eleven trillion, two hundred thirteen billion, four hundred thirty-five million, five hundred fifty-one thousand, five hundred fifty-four".