1642877170399 has 2 divisors, whose sum is σ = 1642877170400. Its totient is φ = 1642877170398.

The previous prime is 1642877170349. The next prime is 1642877170409. The reversal of 1642877170399 is 9930717782461.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1642877170399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1642877170399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1642877170339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 821438585199 + 821438585200.

It is an arithmetic number, because the mean of its divisors is an integer number (821438585200).

Almost surely, 2^{1642877170399} is an apocalyptic number.

1642877170399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1642877170399 is an equidigital number, since it uses as much as digits as its factorization.

1642877170399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32006016, while the sum is 64.

The spelling of 1642877170399 in words is "one trillion, six hundred forty-two billion, eight hundred seventy-seven million, one hundred seventy thousand, three hundred ninety-nine".