51142002666 has 32 divisors (see below), whose sum is σ = 108343070208. Its totient is φ = 16038274560.

The previous prime is 51142002641. The next prime is 51142002697. The reversal of 51142002666 is 66620024115.

It is a super-2 number, since 2×51142002666² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167526 + ... + 361038.

It is an arithmetic number, because the mean of its divisors is an integer number (3385720944).

Almost surely, 2^51142002666 is an apocalyptic number.

51142002666 is an abundant number, since it is smaller than the sum of its proper divisors (57201067542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51142002666 is a wasteful number, since it uses less digits than its factorization.

51142002666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196126.

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 51142002666 in words is "fifty-one billion, one hundred forty-two million, two thousand, six hundred sixty-six".