1972069661875 has 10 divisors (see below), whose sum is σ = 2464298250260. Its totient is φ = 1577655729000.

The previous prime is 1972069661831. The next prime is 1972069661893. The reversal of 1972069661875 is 5781669602791.

It is a de Polignac number, because none of the positive numbers 2^k-1972069661875 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1972069661875.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1577655105 + ... + 1577656354.

It is an arithmetic number, because the mean of its divisors is an integer number (246429825026).

Almost surely, 2^{1972069661875} is an apocalyptic number.

1972069661875 is a deficient number, since it is larger than the sum of its proper divisors (492228588385).

1972069661875 is an frugal number, since it uses more digits than its factorization.

1972069661875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3155311479 (or 3155311464 counting only the distinct ones).

The product of its (nonzero) digits is 68584320, while the sum is 67.

The spelling of 1972069661875 in words is "one trillion, nine hundred seventy-two billion, sixty-nine million, six hundred sixty-one thousand, eight hundred seventy-five".