1557635074343 has 4 divisors (see below), whose sum is σ = 1557651388488. Its totient is φ = 1557618760200.

The previous prime is 1557635074339. The next prime is 1557635074393. The reversal of 1557635074343 is 3434705367551.

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 1557635074343 - 2² = 1557635074339 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1557635074393) 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, 8013008 + ... + 8205093.

It is an arithmetic number, because the mean of its divisors is an integer number (389412847122).

Almost surely, 2^{1557635074343} is an apocalyptic number.

1557635074343 is a deficient number, since it is larger than the sum of its proper divisors (16314145).

1557635074343 is an equidigital number, since it uses as much as digits as its factorization.

1557635074343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16314144.

The product of its (nonzero) digits is 15876000, while the sum is 53.

The spelling of 1557635074343 in words is "one trillion, five hundred fifty-seven billion, six hundred thirty-five million, seventy-four thousand, three hundred forty-three".