151155211666 has 4 divisors (see below), whose sum is σ = 226732817502. Its totient is φ = 75577605832.

The previous prime is 151155211621. The next prime is 151155211673. The reversal of 151155211666 is 666112551151.

It is a happy number.

151155211666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 133367388025 + 17787823641 = 365195^2 + 133371^2 .

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 as a sum of consecutive naturals, namely, 37788802915 + ... + 37788802918.

Almost surely, 2^151155211666 is an apocalyptic number.

151155211666 is a deficient number, since it is larger than the sum of its proper divisors (75577605836).

151155211666 is an equidigital number, since it uses as much as digits as its factorization.

151155211666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75577605835.

The product of its digits is 54000, while the sum is 40.

The spelling of 151155211666 in words is "one hundred fifty-one billion, one hundred fifty-five million, two hundred eleven thousand, six hundred sixty-six".