51342546805 has 16 divisors (see below), whose sum is σ = 67553253504. Its totient is φ = 37150482880.

The previous prime is 51342546803. The next prime is 51342546809. The reversal of 51342546805 is 50864524315.

It is not a de Polignac number, because 51342546805 - 2¹ = 51342546803 is a prime.

It is a super-2 number, since 2×51342546805² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51342546803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2358457 + ... + 2380126.

It is an arithmetic number, because the mean of its divisors is an integer number (4222078344).

Almost surely, 2^51342546805 is an apocalyptic number.

51342546805 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51342546805 is a deficient number, since it is larger than the sum of its proper divisors (16210706699).

51342546805 is a wasteful number, since it uses less digits than its factorization.

51342546805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4738796.

The product of its (nonzero) digits is 576000, while the sum is 43.

The spelling of 51342546805 in words is "fifty-one billion, three hundred forty-two million, five hundred forty-six thousand, eight hundred five".