1557406056632 has 16 divisors (see below), whose sum is σ = 2943129557760. Its totient is φ = 772571507904.

The previous prime is 1557406056631. The next prime is 1557406056659. The reversal of 1557406056632 is 2366506047551.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1557406056631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 766438973 + ... + 766441004.

It is an arithmetic number, because the mean of its divisors is an integer number (183945597360).

Almost surely, 2^{1557406056632} is an apocalyptic number.

It is an amenable number.

1557406056632 is a deficient number, since it is larger than the sum of its proper divisors (1385723501128).

1557406056632 is a wasteful number, since it uses less digits than its factorization.

1557406056632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532880110 (or 1532880106 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 50.

The spelling of 1557406056632 in words is "one trillion, five hundred fifty-seven billion, four hundred six million, fifty-six thousand, six hundred thirty-two".