55112421155 has 48 divisors (see below), whose sum is σ = 77105952000. Its totient is φ = 37681300800.

The previous prime is 55112421137. The next prime is 55112421157.

55112421155 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55112421155 - 2³² = 50817453859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55112421157) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1487546 + ... + 1524144.

It is an arithmetic number, because the mean of its divisors is an integer number (1606374000).

Almost surely, 2^55112421155 is an apocalyptic number.

55112421155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55112421155 is a deficient number, since it is larger than the sum of its proper divisors (21993530845).

55112421155 is a wasteful number, since it uses less digits than its factorization.

55112421155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36776 (or 36765 counting only the distinct ones).

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

The spelling of 55112421155 in words is "fifty-five billion, one hundred twelve million, four hundred twenty-one thousand, one hundred fifty-five".