1557334006723 has 16 divisors (see below), whose sum is σ = 1718085271680. Its totient is φ = 1399780254400.

The previous prime is 1557334006637. The next prime is 1557334006757. The reversal of 1557334006723 is 3276004337551.

It is a de Polignac number, because none of the positive numbers 2^k-1557334006723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1557334006793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35350236 + ... + 35394262.

It is an arithmetic number, because the mean of its divisors is an integer number (107380329480).

Almost surely, 2^{1557334006723} is an apocalyptic number.

1557334006723 is a deficient number, since it is larger than the sum of its proper divisors (160751264957).

1557334006723 is a wasteful number, since it uses less digits than its factorization.

1557334006723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80258.

The product of its (nonzero) digits is 1587600, while the sum is 46.

The spelling of 1557334006723 in words is "one trillion, five hundred fifty-seven billion, three hundred thirty-four million, six thousand, seven hundred twenty-three".