2315721646572 has 12 divisors (see below), whose sum is σ = 5403350508696. Its totient is φ = 771907215520.

The previous prime is 2315721646571. The next prime is 2315721646591. The reversal of 2315721646572 is 2756461275132.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (2315721646571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96488401929 + ... + 96488401952.

It is an arithmetic number, because the mean of its divisors is an integer number (450279209058).

Almost surely, 2^{2315721646572} is an apocalyptic number.

It is an amenable number.

2315721646572 is an abundant number, since it is smaller than the sum of its proper divisors (3087628862124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2315721646572 is a wasteful number, since it uses less digits than its factorization.

2315721646572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192976803888 (or 192976803886 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 51.

The spelling of 2315721646572 in words is "two trillion, three hundred fifteen billion, seven hundred twenty-one million, six hundred forty-six thousand, five hundred seventy-two".