51623516454 has 16 divisors (see below), whose sum is σ = 103272770880. Its totient is φ = 17203549160.

The previous prime is 51623516447. The next prime is 51623516459. The reversal of 51623516454 is 45461532615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51623516459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1046292 + ... + 1094519.

It is an arithmetic number, because the mean of its divisors is an integer number (6454548180).

Almost surely, 2^51623516454 is an apocalyptic number.

51623516454 is an abundant number, since it is smaller than the sum of its proper divisors (51649254426).

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

51623516454 is a wasteful number, since it uses less digits than its factorization.

51623516454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2144835.

The product of its digits is 432000, while the sum is 42.

The spelling of 51623516454 in words is "fifty-one billion, six hundred twenty-three million, five hundred sixteen thousand, four hundred fifty-four".