51423121554 has 32 divisors (see below), whose sum is σ = 118129228800. Its totient is φ = 14618487312.

The previous prime is 51423121487. The next prime is 51423121583. The reversal of 51423121554 is 45512132415.

It is a super-3 number, since 3×51423121554³ (a number of 33 digits) contains 333 as substring.

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 15 ways as a sum of consecutive naturals, for example, 3067924 + ... + 3084639.

It is an arithmetic number, because the mean of its divisors is an integer number (3691538400).

Almost surely, 2^51423121554 is an apocalyptic number.

51423121554 is an abundant number, since it is smaller than the sum of its proper divisors (66706107246).

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

51423121554 is a wasteful number, since it uses less digits than its factorization.

51423121554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6152774.

The product of its digits is 24000, while the sum is 33.

Adding to 51423121554 its reverse (45512132415), we get a palindrome (96935253969).

The spelling of 51423121554 in words is "fifty-one billion, four hundred twenty-three million, one hundred twenty-one thousand, five hundred fifty-four".