7540616073257 has 4 divisors (see below), whose sum is σ = 7540628462340. Its totient is φ = 7540603684176.

The previous prime is 7540616073247. The next prime is 7540616073259. The reversal of 7540616073257 is 7523706160457.

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 1130179483801 + 6410436589456 = 1063099^2 + 2531884^2 .

It is a cyclic number.

It is not a de Polignac number, because 7540616073257 - 2¹⁴ = 7540616056873 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7540616073199 and 7540616073208.

It is not an unprimeable number, because it can be changed into a prime (7540616073259) 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, 5231678 + ... + 6515495.

It is an arithmetic number, because the mean of its divisors is an integer number (1885157115585).

Almost surely, 2^{7540616073257} is an apocalyptic number.

It is an amenable number.

7540616073257 is a deficient number, since it is larger than the sum of its proper divisors (12389083).

7540616073257 is a wasteful number, since it uses less digits than its factorization.

7540616073257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12389082.

The product of its (nonzero) digits is 7408800, while the sum is 53.

The spelling of 7540616073257 in words is "seven trillion, five hundred forty billion, six hundred sixteen million, seventy-three thousand, two hundred fifty-seven".