1557013352831 has 2 divisors, whose sum is σ = 1557013352832. Its totient is φ = 1557013352830.

The previous prime is 1557013352821. The next prime is 1557013352887. The reversal of 1557013352831 is 1382533107551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1557013352831 - 2¹⁰ = 1557013351807 is a prime.

It is a super-2 number, since 2×1557013352831² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1557013352821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 778506676415 + 778506676416.

It is an arithmetic number, because the mean of its divisors is an integer number (778506676416).

Almost surely, 2^{1557013352831} is an apocalyptic number.

1557013352831 is a deficient number, since it is larger than the sum of its proper divisors (1).

1557013352831 is an equidigital number, since it uses as much as digits as its factorization.

1557013352831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378000, while the sum is 44.

The spelling of 1557013352831 in words is "one trillion, five hundred fifty-seven billion, thirteen million, three hundred fifty-two thousand, eight hundred thirty-one".