7427257348457 has 4 divisors (see below), whose sum is σ = 7428315520080. Its totient is φ = 7426199176836.

The previous prime is 7427257348387. The next prime is 7427257348493. The reversal of 7427257348457 is 7548437527247.

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 7427257348457 - 2⁸ = 7427257348201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7427257348393 and 7427257348402.

It is not an unprimeable number, because it can be changed into a prime (7427257348057) 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, 529075283 + ... + 529089320.

It is an arithmetic number, because the mean of its divisors is an integer number (1857078880020).

Almost surely, 2^{7427257348457} is an apocalyptic number.

It is an amenable number.

7427257348457 is a deficient number, since it is larger than the sum of its proper divisors (1058171623).

7427257348457 is a wasteful number, since it uses less digits than its factorization.

7427257348457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058171622.

The product of its digits is 368793600, while the sum is 65.

The spelling of 7427257348457 in words is "seven trillion, four hundred twenty-seven billion, two hundred fifty-seven million, three hundred forty-eight thousand, four hundred fifty-seven".