1973581255632 has 640 divisors, whose sum is σ = 6302819450880. Its totient is φ = 520277852160.

The previous prime is 1973581255619. The next prime is 1973581255643. The reversal of 1973581255632 is 2365521853791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5590881568 + ... + 5590881920.

It is an arithmetic number, because the mean of its divisors is an integer number (9848155392).

Almost surely, 2^{1973581255632} is an apocalyptic number.

1973581255632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1973581255632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3151409725440).

1973581255632 is an abundant number, since it is smaller than the sum of its proper divisors (4329238195248).

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

1973581255632 is a wasteful number, since it uses less digits than its factorization.

1973581255632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691 (or 685 counting only the distinct ones).

The product of its digits is 13608000, while the sum is 57.

The spelling of 1973581255632 in words is "one trillion, nine hundred seventy-three billion, five hundred eighty-one million, two hundred fifty-five thousand, six hundred thirty-two".