827394521951 has 8 divisors (see below), whose sum is σ = 830410530144. Its totient is φ = 824381832960.

The previous prime is 827394521929. The next prime is 827394521953. The reversal of 827394521951 is 159125493728.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 827394521951 - 2⁶ = 827394521887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (827394521953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329795 + ... + 1327988.

It is an arithmetic number, because the mean of its divisors is an integer number (103801316268).

Almost surely, 2^827394521951 is an apocalyptic number.

827394521951 is a deficient number, since it is larger than the sum of its proper divisors (3016008193).

827394521951 is a wasteful number, since it uses less digits than its factorization.

827394521951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659601.

The product of its digits is 5443200, while the sum is 56.

The spelling of 827394521951 in words is "eight hundred twenty-seven billion, three hundred ninety-four million, five hundred twenty-one thousand, nine hundred fifty-one".