823957820461 has 8 divisors (see below), whose sum is σ = 850552872704. Its totient is φ = 797363753760.

The previous prime is 823957820429. The next prime is 823957820467. The reversal of 823957820461 is 164028759328.

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 823957820461 - 2⁵ = 823957820429 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 (823957820467) 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, 1695826 + ... + 2126908.

It is an arithmetic number, because the mean of its divisors is an integer number (106319109088).

It is a 1-persistent number, because it is pandigital, but 2⋅823957820461 = 1647915640922 is not.

Almost surely, 2^823957820461 is an apocalyptic number.

It is an amenable number.

823957820461 is a deficient number, since it is larger than the sum of its proper divisors (26595052243).

823957820461 is a wasteful number, since it uses less digits than its factorization.

823957820461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492771.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 823957820461 in words is "eight hundred twenty-three billion, nine hundred fifty-seven million, eight hundred twenty thousand, four hundred sixty-one".