51454108207 has 4 divisors (see below), whose sum is σ = 51508100880. Its totient is φ = 51400115536.

The previous prime is 51454108193. The next prime is 51454108213. The reversal of 51454108207 is 70280145415.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51454108207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51454108217) by changing a digit.

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, 26994907 + ... + 26996812.

It is an arithmetic number, because the mean of its divisors is an integer number (12877025220).

Almost surely, 2^51454108207 is an apocalyptic number.

51454108207 is a deficient number, since it is larger than the sum of its proper divisors (53992673).

51454108207 is an equidigital number, since it uses as much as digits as its factorization.

51454108207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53992672.

The product of its (nonzero) digits is 44800, while the sum is 37.

The spelling of 51454108207 in words is "fifty-one billion, four hundred fifty-four million, one hundred eight thousand, two hundred seven".