146772747666 has 24 divisors (see below), whose sum is σ = 326602421964. Its totient is φ = 47601972000.

The previous prime is 146772747643. The next prime is 146772747679. The reversal of 146772747666 is 666747277641.

It can be written as a sum of positive squares in 2 ways, for example, as 97878251025 + 48894496641 = 312855^2 + 221121^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110189085 + ... + 110190416.

Almost surely, 2^146772747666 is an apocalyptic number.

146772747666 is an abundant number, since it is smaller than the sum of its proper divisors (179829674298).

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

146772747666 is a wasteful number, since it uses less digits than its factorization.

146772747666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220379546 (or 220379543 counting only the distinct ones).

The product of its digits is 99574272, while the sum is 63.

The spelling of 146772747666 in words is "one hundred forty-six billion, seven hundred seventy-two million, seven hundred forty-seven thousand, six hundred sixty-six".