1657045354123 has 4 divisors (see below), whose sum is σ = 1657048312408. Its totient is φ = 1657042395840.

The previous prime is 1657045354033. The next prime is 1657045354177. The reversal of 1657045354123 is 3214535407561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1657045354123 - 2²⁵ = 1657011799691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1657045054123) 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, 353286 + ... + 1854427.

It is an arithmetic number, because the mean of its divisors is an integer number (414262078102).

Almost surely, 2^{1657045354123} is an apocalyptic number.

1657045354123 is a deficient number, since it is larger than the sum of its proper divisors (2958285).

1657045354123 is an equidigital number, since it uses as much as digits as its factorization.

1657045354123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2958284.

The product of its (nonzero) digits is 1512000, while the sum is 46.

The spelling of 1657045354123 in words is "one trillion, six hundred fifty-seven billion, forty-five million, three hundred fifty-four thousand, one hundred twenty-three".