66346146778130 has 32 divisors (see below), whose sum is σ = 125159543366400. Its totient is φ = 25273762823232.

The previous prime is 66346146778111. The next prime is 66346146778147. The reversal of 66346146778130 is 3187764164366.

It is a super-2 number, since 2×66346146778130² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 629775950 + ... + 629881289.

It is an arithmetic number, because the mean of its divisors is an integer number (3911235730200).

Almost surely, 2^{66346146778130} is an apocalyptic number.

66346146778130 is a deficient number, since it is larger than the sum of its proper divisors (58813396588270).

66346146778130 is a wasteful number, since it uses less digits than its factorization.

66346146778130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259657498.

The product of its (nonzero) digits is 73156608, while the sum is 62.

The spelling of 66346146778130 in words is "sixty-six trillion, three hundred forty-six billion, one hundred forty-six million, seven hundred seventy-eight thousand, one hundred thirty".