55434632420 has 24 divisors (see below), whose sum is σ = 116420539200. Its totient is φ = 22172365152.

The previous prime is 55434632401. The next prime is 55434632431. The reversal of 55434632420 is 2423643455.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241961 + ... + 411599.

It is an arithmetic number, because the mean of its divisors is an integer number (4850855800).

Almost surely, 2^55434632420 is an apocalyptic number.

It is an amenable number.

55434632420 is an abundant number, since it is smaller than the sum of its proper divisors (60985906780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55434632420 is a wasteful number, since it uses less digits than its factorization.

55434632420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185987 (or 185985 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 38.

The spelling of 55434632420 in words is "fifty-five billion, four hundred thirty-four million, six hundred thirty-two thousand, four hundred twenty".