1972693284677 has 4 divisors (see below), whose sum is σ = 2026009319436. Its totient is φ = 1919377249920.

The previous prime is 1972693284673. The next prime is 1972693284733. The reversal of 1972693284677 is 7764823962791.

It is a Cunningham number, because it is equal to 1404526²+1.

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 1765193903236 + 207499381441 = 1328606^2 + 455521^2 .

It is a cyclic number.

It is not a de Polignac number, because 1972693284677 - 2² = 1972693284673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1972693284677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972693284671) 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, 26658017324 + ... + 26658017397.

It is an arithmetic number, because the mean of its divisors is an integer number (506502329859).

Almost surely, 2^{1972693284677} is an apocalyptic number.

It is an amenable number.

1972693284677 is a deficient number, since it is larger than the sum of its proper divisors (53316034759).

1972693284677 is an equidigital number, since it uses as much as digits as its factorization.

1972693284677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53316034758.

The product of its digits is 384072192, while the sum is 71.

The spelling of 1972693284677 in words is "one trillion, nine hundred seventy-two billion, six hundred ninety-three million, two hundred eighty-four thousand, six hundred seventy-seven".