1557145328011 has 16 divisors (see below), whose sum is σ = 1922009612544. Its totient is φ = 1228476537504.

The previous prime is 1557145327987. The next prime is 1557145328099. The reversal of 1557145328011 is 1108235417551.

It is a cyclic number.

It is not a de Polignac number, because 1557145328011 - 2⁵ = 1557145327979 is a prime.

It is a super-2 number, since 2×1557145328011² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1557145328411) 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, 24624745 + ... + 24687898.

It is an arithmetic number, because the mean of its divisors is an integer number (120125600784).

Almost surely, 2^{1557145328011} is an apocalyptic number.

1557145328011 is a deficient number, since it is larger than the sum of its proper divisors (364864284533).

1557145328011 is a wasteful number, since it uses less digits than its factorization.

1557145328011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49313010.

The product of its (nonzero) digits is 168000, while the sum is 43.

The spelling of 1557145328011 in words is "one trillion, five hundred fifty-seven billion, one hundred forty-five million, three hundred twenty-eight thousand, eleven".