2724572105257 has 4 divisors (see below), whose sum is σ = 2791025083476. Its totient is φ = 2658119127040.

The previous prime is 2724572105251. The next prime is 2724572105309. The reversal of 2724572105257 is 7525012754272.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1402568858601 + 1322003246656 = 1184301^2 + 1149784^2 .

It is a cyclic number.

It is not a de Polignac number, because 2724572105257 - 2²³ = 2724563716649 is a prime.

It is a super-2 number, since 2×2724572105257² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2724572105257.

It is not an unprimeable number, because it can be changed into a prime (2724572105251) 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, 33226489048 + ... + 33226489129.

It is an arithmetic number, because the mean of its divisors is an integer number (697756270869).

Almost surely, 2^{2724572105257} is an apocalyptic number.

It is an amenable number.

2724572105257 is a deficient number, since it is larger than the sum of its proper divisors (66452978219).

2724572105257 is an equidigital number, since it uses as much as digits as its factorization.

2724572105257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66452978218.

The product of its (nonzero) digits is 2744000, while the sum is 49.

The spelling of 2724572105257 in words is "two trillion, seven hundred twenty-four billion, five hundred seventy-two million, one hundred five thousand, two hundred fifty-seven".