51660206550722 has 32 divisors (see below), whose sum is σ = 98053255019520. Its totient is φ = 19826944940880.

The previous prime is 51660206550683. The next prime is 51660206550727. The reversal of 51660206550722 is 22705560206615.

It is not an unprimeable number, because it can be changed into a prime (51660206550727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2503391822 + ... + 2503412457.

It is an arithmetic number, because the mean of its divisors is an integer number (3064164219360).

Almost surely, 2^{51660206550722} is an apocalyptic number.

51660206550722 is a deficient number, since it is larger than the sum of its proper divisors (46393048468798).

51660206550722 is a wasteful number, since it uses less digits than its factorization.

51660206550722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5006804366.

The product of its (nonzero) digits is 1512000, while the sum is 47.

The spelling of 51660206550722 in words is "fifty-one trillion, six hundred sixty billion, two hundred six million, five hundred fifty thousand, seven hundred twenty-two".