1655432740432 has 80 divisors (see below), whose sum is σ = 3480436916352. Its totient is φ = 759730728960.

The previous prime is 1655432740399. The next prime is 1655432740439. The reversal of 1655432740432 is 2340472345561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1655432740439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7457932 + ... + 7676692.

Almost surely, 2^{1655432740432} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1655432740432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1740218458176).

1655432740432 is an abundant number, since it is smaller than the sum of its proper divisors (1825004175920).

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

1655432740432 is a wasteful number, since it uses less digits than its factorization.

1655432740432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219476 (or 219470 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 46.

The spelling of 1655432740432 in words is "one trillion, six hundred fifty-five billion, four hundred thirty-two million, seven hundred forty thousand, four hundred thirty-two".