8501331620461 has 8 divisors (see below), whose sum is σ = 8515256660280. Its totient is φ = 8487407056128.

The previous prime is 8501331620443. The next prime is 8501331620471. The reversal of 8501331620461 is 1640261331058.

It can be written as a sum of positive squares in 4 ways, for example, as 2649057961 + 8498682562500 = 51469^2 + 2915250^2 .

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 8501331620461 - 2⁷ = 8501331620333 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 (8501331620471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62785545 + ... + 62920801.

It is an arithmetic number, because the mean of its divisors is an integer number (1064407082535).

Almost surely, 2^{8501331620461} is an apocalyptic number.

It is an amenable number.

8501331620461 is a deficient number, since it is larger than the sum of its proper divisors (13925039819).

8501331620461 is a wasteful number, since it uses less digits than its factorization.

8501331620461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237743.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 8501331620461 in words is "eight trillion, five hundred one billion, three hundred thirty-one million, six hundred twenty thousand, four hundred sixty-one".