1983380372251 has 2 divisors, whose sum is σ = 1983380372252. Its totient is φ = 1983380372250.

The previous prime is 1983380372249. The next prime is 1983380372419. The reversal of 1983380372251 is 1522730833891.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (1522730833891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1983380372251 - 2¹ = 1983380372249 is a prime.

Together with 1983380372249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1983380372551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991690186125 + 991690186126.

It is an arithmetic number, because the mean of its divisors is an integer number (991690186126).

Almost surely, 2^{1983380372251} is an apocalyptic number.

1983380372251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1983380372251 is an equidigital number, since it uses as much as digits as its factorization.

1983380372251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 1983380372251 in words is "one trillion, nine hundred eighty-three billion, three hundred eighty million, three hundred seventy-two thousand, two hundred fifty-one".