1972866870144 has 48 divisors (see below), whose sum is σ = 5677129929120. Its totient is φ = 657622289664.

The previous prime is 1972866870133. The next prime is 1972866870157. The reversal of 1972866870144 is 4410786682791.

1972866870144 is a `hidden beast` number, since 1 + 97 + 286 + 68 + 70 + 144 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 856277872 + ... + 856280175.

It is an arithmetic number, because the mean of its divisors is an integer number (118273540190).

Almost surely, 2^{1972866870144} is an apocalyptic number.

It is an amenable number.

1972866870144 is an abundant number, since it is smaller than the sum of its proper divisors (3704263058976).

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

1972866870144 is a wasteful number, since it uses less digits than its factorization.

1972866870144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712558067 (or 1712558052 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 63.

The spelling of 1972866870144 in words is "one trillion, nine hundred seventy-two billion, eight hundred sixty-six million, eight hundred seventy thousand, one hundred forty-four".