1057405014021 has 4 divisors (see below), whose sum is σ = 1409873352032. Its totient is φ = 704936676012.

The previous prime is 1057405014019. The next prime is 1057405014119. The reversal of 1057405014021 is 1204105047501.

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 1057405014021 - 2¹ = 1057405014019 is a prime.

It is a super-2 number, since 2×1057405014021² (a number of 25 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 1057405014021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057405054021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176234169001 + ... + 176234169006.

It is an arithmetic number, because the mean of its divisors is an integer number (352468338008).

Almost surely, 2^{1057405014021} is an apocalyptic number.

It is an amenable number.

1057405014021 is a deficient number, since it is larger than the sum of its proper divisors (352468338011).

1057405014021 is an equidigital number, since it uses as much as digits as its factorization.

1057405014021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352468338010.

The product of its (nonzero) digits is 5600, while the sum is 30.

The spelling of 1057405014021 in words is "one trillion, fifty-seven billion, four hundred five million, fourteen thousand, twenty-one".