68970563156 has 24 divisors (see below), whose sum is σ = 135918531840. Its totient is φ = 30338956800.

The previous prime is 68970563153. The next prime is 68970563173. The reversal of 68970563156 is 65136507986.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68970563153) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 25281101 + ... + 25283828.

It is an arithmetic number, because the mean of its divisors is an integer number (5663272160).

Almost surely, 2^68970563156 is an apocalyptic number.

It is an amenable number.

68970563156 is a deficient number, since it is larger than the sum of its proper divisors (66947968684).

68970563156 is a wasteful number, since it uses less digits than its factorization.

68970563156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50564975 (or 50564973 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 56.

The spelling of 68970563156 in words is "sixty-eight billion, nine hundred seventy million, five hundred sixty-three thousand, one hundred fifty-six".