1555694111132 has 48 divisors (see below), whose sum is σ = 3275279427840. Its totient is φ = 631609373952.

The previous prime is 1555694111129. The next prime is 1555694111137. The reversal of 1555694111132 is 2311114965551.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1555694111137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18195908 + ... + 18281204.

It is an arithmetic number, because the mean of its divisors is an integer number (68234988080).

Almost surely, 2^{1555694111132} is an apocalyptic number.

It is an amenable number.

1555694111132 is an abundant number, since it is smaller than the sum of its proper divisors (1719585316708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1555694111132 is a wasteful number, since it uses less digits than its factorization.

1555694111132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119610 (or 119608 counting only the distinct ones).

The product of its digits is 162000, while the sum is 44.

The spelling of 1555694111132 in words is "one trillion, five hundred fifty-five billion, six hundred ninety-four million, one hundred eleven thousand, one hundred thirty-two".