51736453666 has 16 divisors (see below), whose sum is σ = 78721657920. Its totient is φ = 25496122960.

The previous prime is 51736453649. The next prime is 51736453669. The reversal of 51736453666 is 66635463715.

It is not an unprimeable number, because it can be changed into a prime (51736453669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 427485 + ... + 534991.

It is an arithmetic number, because the mean of its divisors is an integer number (4920103620).

Almost surely, 2^51736453666 is an apocalyptic number.

51736453666 is a deficient number, since it is larger than the sum of its proper divisors (26985204254).

51736453666 is a wasteful number, since it uses less digits than its factorization.

51736453666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110969.

The product of its digits is 8164800, while the sum is 52.

The spelling of 51736453666 in words is "fifty-one billion, seven hundred thirty-six million, four hundred fifty-three thousand, six hundred sixty-six".