151566605066 has 4 divisors (see below), whose sum is σ = 227349907602. Its totient is φ = 75783302532.

The previous prime is 151566605017. The next prime is 151566605171. The reversal of 151566605066 is 660506665151.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 140891376025 + 10675229041 = 375355^2 + 103321^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 151566605066.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37891651265 + ... + 37891651268.

Almost surely, 2^151566605066 is an apocalyptic number.

151566605066 is a deficient number, since it is larger than the sum of its proper divisors (75783302536).

151566605066 is an equidigital number, since it uses as much as digits as its factorization.

151566605066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75783302535.

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 151566605066 in words is "one hundred fifty-one billion, five hundred sixty-six million, six hundred five thousand, sixty-six".