2159722298531 has 4 divisors (see below), whose sum is σ = 2468254055472. Its totient is φ = 1851190541592.

The previous prime is 2159722298519. The next prime is 2159722298537. The reversal of 2159722298531 is 1358922279512.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2159722298531 - 2¹⁰ = 2159722297507 is a prime.

It is a super-3 number, since 3×2159722298531³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2159722298537) 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, 154265878460 + ... + 154265878473.

It is an arithmetic number, because the mean of its divisors is an integer number (617063513868).

Almost surely, 2^{2159722298531} is an apocalyptic number.

2159722298531 is a deficient number, since it is larger than the sum of its proper divisors (308531756941).

2159722298531 is an equidigital number, since it uses as much as digits as its factorization.

2159722298531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308531756940.

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

The spelling of 2159722298531 in words is "two trillion, one hundred fifty-nine billion, seven hundred twenty-two million, two hundred ninety-eight thousand, five hundred thirty-one".