9801536047321 has 4 divisors (see below), whose sum is σ = 9805913689600. Its totient is φ = 9797158405044.

The previous prime is 9801536047319. The next prime is 9801536047367. The reversal of 9801536047321 is 1237406351089.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9801536047321 - 2¹ = 9801536047319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9801536042321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2188817781 + ... + 2188822258.

It is an arithmetic number, because the mean of its divisors is an integer number (2451478422400).

It is a 1-persistent number, because it is pandigital, but 2⋅9801536047321 = 19603072094642 is not.

Almost surely, 2^{9801536047321} is an apocalyptic number.

It is an amenable number.

9801536047321 is a deficient number, since it is larger than the sum of its proper divisors (4377642279).

9801536047321 is a wasteful number, since it uses less digits than its factorization.

9801536047321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4377642278.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 9801536047321 in words is "nine trillion, eight hundred one billion, five hundred thirty-six million, forty-seven thousand, three hundred twenty-one".