67956147856 has 15 divisors (see below), whose sum is σ = 131667056803. Its totient is φ = 33977552560.

The previous prime is 67956147817. The next prime is 67956147901. The reversal of 67956147856 is 65874165976.

The square root of 67956147856 is 260684.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1010151 + ... + 1075321.

Almost surely, 2^67956147856 is an apocalyptic number.

67956147856 is the 260684-th square number.

It is an amenable number.

67956147856 is a deficient number, since it is larger than the sum of its proper divisors (63710908947).

67956147856 is an frugal number, since it uses more digits than its factorization.

67956147856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130350 (or 65173 counting only the distinct ones).

The product of its digits is 76204800, while the sum is 64.

Multiplying 67956147856 by its sum of digits (64), we get a square (4349193462784 = 2085472²).

The spelling of 67956147856 in words is "sixty-seven billion, nine hundred fifty-six million, one hundred forty-seven thousand, eight hundred fifty-six".