1428572272857 has 4 divisors (see below), whose sum is σ = 1904763030480. Its totient is φ = 952381515236.

The previous prime is 1428572272843. The next prime is 1428572272877. The reversal of 1428572272857 is 7582722758241.

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 1428572272857 - 2²⁰ = 1428571224281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1428572272857.

It is not an unprimeable number, because it can be changed into a prime (1428572272877) 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, 238095378807 + ... + 238095378812.

It is an arithmetic number, because the mean of its divisors is an integer number (476190757620).

Almost surely, 2^{1428572272857} is an apocalyptic number.

It is an amenable number.

1428572272857 is a deficient number, since it is larger than the sum of its proper divisors (476190757623).

1428572272857 is an equidigital number, since it uses as much as digits as its factorization.

1428572272857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476190757622.

The product of its digits is 35123200, while the sum is 60.

The spelling of 1428572272857 in words is "one trillion, four hundred twenty-eight billion, five hundred seventy-two million, two hundred seventy-two thousand, eight hundred fifty-seven".