153740168906 has 4 divisors (see below), whose sum is σ = 230610253362. Its totient is φ = 76870084452.

The previous prime is 153740168893. The next prime is 153740168917. The reversal of 153740168906 is 609861047351.

153740168906 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 609861047351 = 59753 ⋅10206367.

It can be written as a sum of positive squares in only one way, i.e., 153696145681 + 44023225 = 392041^2 + 6635^2 .

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, 38435042225 + ... + 38435042228.

Almost surely, 2^153740168906 is an apocalyptic number.

153740168906 is a deficient number, since it is larger than the sum of its proper divisors (76870084456).

153740168906 is an equidigital number, since it uses as much as digits as its factorization.

153740168906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76870084455.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 153740168906 in words is "one hundred fifty-three billion, seven hundred forty million, one hundred sixty-eight thousand, nine hundred six".