51429207445055 has 32 divisors (see below), whose sum is σ = 70871070493440. Its totient is φ = 35433420468480.

The previous prime is 51429207445043. The next prime is 51429207445061. The reversal of 51429207445055 is 55054470292415.

It is a Cunningham number, because it is equal to 7171416²-1.

It is not a de Polignac number, because 51429207445055 - 2⁸ = 51429207444799 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51429207444988 and 51429207445006.

It is a congruent number.

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, 35139944 + ... + 36574226.

It is an arithmetic number, because the mean of its divisors is an integer number (2214720952920).

Almost surely, 2^{51429207445055} is an apocalyptic number.

51429207445055 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51429207445055 is a deficient number, since it is larger than the sum of its proper divisors (19441863048385).

51429207445055 is a wasteful number, since it uses less digits than its factorization.

51429207445055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468631.

The product of its (nonzero) digits is 10080000, while the sum is 53.

The spelling of 51429207445055 in words is "fifty-one trillion, four hundred twenty-nine billion, two hundred seven million, four hundred forty-five thousand, fifty-five".