1556781829132 has 12 divisors (see below), whose sum is σ = 2842818992496. Its totient is φ = 744547831280.

The previous prime is 1556781829129. The next prime is 1556781829139. The reversal of 1556781829132 is 2319281876551.

It is not an unprimeable number, because it can be changed into a prime (1556781829139) 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, 8460770719 + ... + 8460770902.

It is an arithmetic number, because the mean of its divisors is an integer number (236901582708).

Almost surely, 2^{1556781829132} is an apocalyptic number.

It is an amenable number.

1556781829132 is a deficient number, since it is larger than the sum of its proper divisors (1286037163364).

1556781829132 is a wasteful number, since it uses less digits than its factorization.

1556781829132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16921541648 (or 16921541646 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 58.

The spelling of 1556781829132 in words is "one trillion, five hundred fifty-six billion, seven hundred eighty-one million, eight hundred twenty-nine thousand, one hundred thirty-two".