55121412155 has 4 divisors (see below), whose sum is σ = 66145694592. Its totient is φ = 44097129720.

The previous prime is 55121412113. The next prime is 55121412173.

55121412155 is nontrivially palindromic in base 10.

55121412155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 55121412155 - 2⁸ = 55121411899 is a prime.

It is a super-2 number, since 2×55121412155² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5512141211 + ... + 5512141220.

It is an arithmetic number, because the mean of its divisors is an integer number (16536423648).

Almost surely, 2^55121412155 is an apocalyptic number.

55121412155 is a deficient number, since it is larger than the sum of its proper divisors (11024282437).

55121412155 is a wasteful number, since it uses less digits than its factorization.

55121412155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11024282436.

The product of its digits is 10000, while the sum is 32.

The spelling of 55121412155 in words is "fifty-five billion, one hundred twenty-one million, four hundred twelve thousand, one hundred fifty-five".