2167428783997 has 2 divisors, whose sum is σ = 2167428783998. Its totient is φ = 2167428783996.

The previous prime is 2167428783959. The next prime is 2167428784007. The reversal of 2167428783997 is 7993878247612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2167428783961 + 36 = 1472219^2 + 6^2 .

It is a cyclic number.

It is not a de Polignac number, because 2167428783997 - 2²³ = 2167420395389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2167428783097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083714391998 + 1083714391999.

It is an arithmetic number, because the mean of its divisors is an integer number (1083714391999).

Almost surely, 2^{2167428783997} is an apocalyptic number.

It is an amenable number.

2167428783997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2167428783997 is an equidigital number, since it uses as much as digits as its factorization.

2167428783997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 512096256, while the sum is 73.

The spelling of 2167428783997 in words is "two trillion, one hundred sixty-seven billion, four hundred twenty-eight million, seven hundred eighty-three thousand, nine hundred ninety-seven".