1972063064669 has 4 divisors (see below), whose sum is σ = 1973074899900. Its totient is φ = 1971051229440.

The previous prime is 1972063064659. The next prime is 1972063064677. The reversal of 1972063064669 is 9664603602791.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 676279259044 + 1295783805625 = 822362^2 + 1138325^2 .

It is a cyclic number.

It is not a de Polignac number, because 1972063064669 - 2²⁸ = 1971794629213 is a prime.

It is a super-2 number, since 2×1972063064669² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972063064659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505914692 + ... + 505918589.

It is an arithmetic number, because the mean of its divisors is an integer number (493268724975).

Almost surely, 2^{1972063064669} is an apocalyptic number.

It is an amenable number.

1972063064669 is a deficient number, since it is larger than the sum of its proper divisors (1011835231).

1972063064669 is a wasteful number, since it uses less digits than its factorization.

1972063064669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011835230.

The product of its (nonzero) digits is 17635968, while the sum is 59.

The spelling of 1972063064669 in words is "one trillion, nine hundred seventy-two billion, sixty-three million, sixty-four thousand, six hundred sixty-nine".