2557320311001 has 4 divisors (see below), whose sum is σ = 3409760414672. Its totient is φ = 1704880207332.

The previous prime is 2557320310991. The next prime is 2557320311003. The reversal of 2557320311001 is 1001130237552.

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 not a de Polignac number, because 2557320311001 - 2⁵ = 2557320310969 is a prime.

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 2557320311001.

It is not an unprimeable number, because it can be changed into a prime (2557320311003) 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, 426220051831 + ... + 426220051836.

It is an arithmetic number, because the mean of its divisors is an integer number (852440103668).

Almost surely, 2^{2557320311001} is an apocalyptic number.

It is an amenable number.

2557320311001 is a deficient number, since it is larger than the sum of its proper divisors (852440103671).

2557320311001 is an equidigital number, since it uses as much as digits as its factorization.

2557320311001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852440103670.

The product of its (nonzero) digits is 6300, while the sum is 30.

Adding to 2557320311001 its reverse (1001130237552), we get a palindrome (3558450548553).

The spelling of 2557320311001 in words is "two trillion, five hundred fifty-seven billion, three hundred twenty million, three hundred eleven thousand, one".