51534102646606 has 4 divisors (see below), whose sum is σ = 77301153969912. Its totient is φ = 25767051323302.

The previous prime is 51534102646603. The next prime is 51534102646639. The reversal of 51534102646606 is 60664620143515.

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

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 51534102646606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51534102646601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12883525661650 + ... + 12883525661653.

It is an arithmetic number, because the mean of its divisors is an integer number (19325288492478).

Almost surely, 2^{51534102646606} is an apocalyptic number.

51534102646606 is a deficient number, since it is larger than the sum of its proper divisors (25767051323306).

51534102646606 is a wasteful number, since it uses less digits than its factorization.

51534102646606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25767051323305.

The product of its (nonzero) digits is 3110400, while the sum is 49.

The spelling of 51534102646606 in words is "fifty-one trillion, five hundred thirty-four billion, one hundred two million, six hundred forty-six thousand, six hundred six".