156642147968 has 16 divisors (see below), whose sum is σ = 312060529410. Its totient is φ = 78321073920.

The previous prime is 156642147947. The next prime is 156642147989. The reversal of 156642147968 is 869741246651.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (156642147947) and next prime (156642147989).

It can be written as a sum of positive squares in only one way, i.e., 151732062784 + 4910085184 = 389528^2 + 70072^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611883263 + ... + 611883518.

Almost surely, 2^156642147968 is an apocalyptic number.

It is an amenable number.

156642147968 is a deficient number, since it is larger than the sum of its proper divisors (155418381442).

156642147968 is an equidigital number, since it uses as much as digits as its factorization.

156642147968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223766795 (or 1223766783 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 59.

The spelling of 156642147968 in words is "one hundred fifty-six billion, six hundred forty-two million, one hundred forty-seven thousand, nine hundred sixty-eight".