51005243003055 has 64 divisors (see below), whose sum is σ = 93717143769600. Its totient is φ = 23427205240320.

The previous prime is 51005243003053. The next prime is 51005243003063. The reversal of 51005243003055 is 55030034250015.

It is a happy number.

It is not a de Polignac number, because 51005243003055 - 2¹ = 51005243003053 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51005243003051) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 72598717 + ... + 73297913.

It is an arithmetic number, because the mean of its divisors is an integer number (1464330371400).

Almost surely, 2^{51005243003055} is an apocalyptic number.

51005243003055 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51005243003055 is a deficient number, since it is larger than the sum of its proper divisors (42711900766545).

51005243003055 is a wasteful number, since it uses less digits than its factorization.

51005243003055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722504.

The product of its (nonzero) digits is 45000, while the sum is 33.

The spelling of 51005243003055 in words is "fifty-one trillion, five billion, two hundred forty-three million, three thousand, fifty-five".