55113641421 has 16 divisors (see below), whose sum is σ = 74660657664. Its totient is φ = 36155688624.

The previous prime is 55113641383. The next prime is 55113641447. The reversal of 55113641421 is 12414631155.

It is not a de Polignac number, because 55113641421 - 2¹⁹ = 55113117133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55113641461) 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, 45576 + ... + 335118.

It is an arithmetic number, because the mean of its divisors is an integer number (4666291104).

Almost surely, 2^55113641421 is an apocalyptic number.

It is an amenable number.

55113641421 is a deficient number, since it is larger than the sum of its proper divisors (19547016243).

55113641421 is a wasteful number, since it uses less digits than its factorization.

55113641421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290560.

The product of its digits is 14400, while the sum is 33.

The spelling of 55113641421 in words is "fifty-five billion, one hundred thirteen million, six hundred forty-one thousand, four hundred twenty-one".