1972874023999 has 2 divisors, whose sum is σ = 1972874024000. Its totient is φ = 1972874023998.

The previous prime is 1972874023997. The next prime is 1972874024083. The reversal of 1972874023999 is 9993204782791.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1972874023999 - 2¹ = 1972874023997 is a prime.

Together with 1972874023997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1972874023997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986437011999 + 986437012000.

It is an arithmetic number, because the mean of its divisors is an integer number (986437012000).

Almost surely, 2^{1972874023999} is an apocalyptic number.

1972874023999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1972874023999 is an equidigital number, since it uses as much as digits as its factorization.

1972874023999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 123451776, while the sum is 70.

The spelling of 1972874023999 in words is "one trillion, nine hundred seventy-two billion, eight hundred seventy-four million, twenty-three thousand, nine hundred ninety-nine".