1773878949123 has 16 divisors (see below), whose sum is σ = 2481640901376. Its totient is φ = 1124919623520.

The previous prime is 1773878949103. The next prime is 1773878949133. The reversal of 1773878949123 is 3219498783771.

It is not a de Polignac number, because 1773878949123 - 2¹⁴ = 1773878932739 is a prime.

It is a super-2 number, since 2×1773878949123² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is not an unprimeable number, because it can be changed into a prime (1773878949103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71005165 + ... + 71030142.

It is an arithmetic number, because the mean of its divisors is an integer number (155102556336).

Almost surely, 2^{1773878949123} is an apocalyptic number.

1773878949123 is a deficient number, since it is larger than the sum of its proper divisors (707761952253).

1773878949123 is a wasteful number, since it uses less digits than its factorization.

1773878949123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142035514.

The product of its digits is 128024064, while the sum is 69.

The spelling of 1773878949123 in words is "one trillion, seven hundred seventy-three billion, eight hundred seventy-eight million, nine hundred forty-nine thousand, one hundred twenty-three".