1972901817088 has 72 divisors (see below), whose sum is σ = 4170767978160. Its totient is φ = 928197672960.

The previous prime is 1972901817049. The next prime is 1972901817143. The reversal of 1972901817088 is 8807181092791.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18481948 + ... + 18588388.

It is an arithmetic number, because the mean of its divisors is an integer number (57927333030).

Almost surely, 2^{1972901817088} 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 1972901817088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2085383989080).

1972901817088 is an abundant number, since it is smaller than the sum of its proper divisors (2197866161072).

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

1972901817088 is a wasteful number, since it uses less digits than its factorization.

1972901817088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110733 (or 110719 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 61.

The spelling of 1972901817088 in words is "one trillion, nine hundred seventy-two billion, nine hundred one million, eight hundred seventeen thousand, eighty-eight".