956779378801 has 3 divisors (see below), whose sum is σ = 956780356953. Its totient is φ = 956778400650.

The previous prime is 956779378787. The next prime is 956779378853. The reversal of 956779378801 is 108873977659.

The square root of 956779378801 is 978151.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 956779378801 - 2⁷ = 956779378673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (956779378871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 489076 + ... + 1467226.

It is an arithmetic number, because the mean of its divisors is an integer number (318926785651).

Almost surely, 2^956779378801 is an apocalyptic number.

956779378801 is the 978151-st square number.

956779378801 is the 489076-th centered octagonal number.

It is an amenable number.

956779378801 is a deficient number, since it is larger than the sum of its proper divisors (978152).

956779378801 is an frugal number, since it uses more digits than its factorization.

956779378801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956302 (or 978151 counting only the distinct ones).

The product of its (nonzero) digits is 160030080, while the sum is 70.

The spelling of 956779378801 in words is "nine hundred fifty-six billion, seven hundred seventy-nine million, three hundred seventy-eight thousand, eight hundred one".