51766020730 has 16 divisors (see below), whose sum is σ = 93283902720. Its totient is φ = 20683060432.

The previous prime is 51766020727. The next prime is 51766020737. The reversal of 51766020730 is 3702066715.

It is a self number, because there is not a number n which added to its sum of digits gives 51766020730.

It is not an unprimeable number, because it can be changed into a prime (51766020737) 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, 2909170 + ... + 2926909.

It is an arithmetic number, because the mean of its divisors is an integer number (5830243920).

Almost surely, 2^51766020730 is an apocalyptic number.

51766020730 is a deficient number, since it is larger than the sum of its proper divisors (41517881990).

51766020730 is a wasteful number, since it uses less digits than its factorization.

51766020730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5836973.

The product of its (nonzero) digits is 52920, while the sum is 37.

The spelling of 51766020730 in words is "fifty-one billion, seven hundred sixty-six million, twenty thousand, seven hundred thirty".