55431320434 has 8 divisors (see below), whose sum is σ = 95025120768. Its totient is φ = 23756280180.

The previous prime is 55431320401. The next prime is 55431320471. The reversal of 55431320434 is 43402313455.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 55431320434.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1979690002 + ... + 1979690029.

It is an arithmetic number, because the mean of its divisors is an integer number (11878140096).

Almost surely, 2^55431320434 is an apocalyptic number.

55431320434 is a deficient number, since it is larger than the sum of its proper divisors (39593800334).

55431320434 is a wasteful number, since it uses less digits than its factorization.

55431320434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3959380040.

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 55431320434 its reverse (43402313455), we get a palindrome (98833633889).

The spelling of 55431320434 in words is "fifty-five billion, four hundred thirty-one million, three hundred twenty thousand, four hundred thirty-four".