55421445520042 has 64 divisors (see below), whose sum is σ = 97041125744640. Its totient is φ = 23247437942016.

The previous prime is 55421445520027. The next prime is 55421445520159. The reversal of 55421445520042 is 24002554412455.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 385960143 + ... + 386103709.

It is an arithmetic number, because the mean of its divisors is an integer number (1516267589760).

Almost surely, 2^{55421445520042} is an apocalyptic number.

55421445520042 is a deficient number, since it is larger than the sum of its proper divisors (41619680224598).

55421445520042 is a wasteful number, since it uses less digits than its factorization.

55421445520042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145675.

The product of its (nonzero) digits is 1280000, while the sum is 43.

Adding to 55421445520042 its reverse (24002554412455), we get a palindrome (79423999932497).

The spelling of 55421445520042 in words is "fifty-five trillion, four hundred twenty-one billion, four hundred forty-five million, five hundred twenty thousand, forty-two".