155434440013011 has 16 divisors (see below), whose sum is σ = 230274345001120. Its totient is φ = 103622464766880.

The previous prime is 155434440012949. The next prime is 155434440013049. The reversal of 155434440013011 is 110310044434551.

155434440013011 is a `hidden beast` number, since 1 + 5 + 5 + 4 + 344 + 4 + 0 + 0 + 1 + 301 + 1 = 666.

It is not a de Polignac number, because 155434440013011 - 2⁶ = 155434440012947 is a prime.

It is a super-2 number, since 2×155434440013011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155434440013051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7958260 + ... + 19344321.

It is an arithmetic number, because the mean of its divisors is an integer number (14392146562570).

Almost surely, 2^{155434440013011} is an apocalyptic number.

155434440013011 is a deficient number, since it is larger than the sum of its proper divisors (74839904988109).

155434440013011 is a wasteful number, since it uses less digits than its factorization.

155434440013011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27513443 (or 27513437 counting only the distinct ones).

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

Adding to 155434440013011 its reverse (110310044434551), we get a palindrome (265744484447562).

The spelling of 155434440013011 in words is "one hundred fifty-five trillion, four hundred thirty-four billion, four hundred forty million, thirteen thousand, eleven".