1797213888678 has 16 divisors (see below), whose sum is σ = 3870922221936. Its totient is φ = 552988888800.

The previous prime is 1797213888661. The next prime is 1797213888713. The reversal of 1797213888678 is 8768883127971.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11520601773 + ... + 11520601928.

It is an arithmetic number, because the mean of its divisors is an integer number (241932638871).

Almost surely, 2^{1797213888678} is an apocalyptic number.

1797213888678 is an abundant number, since it is smaller than the sum of its proper divisors (2073708333258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1797213888678 is a wasteful number, since it uses less digits than its factorization.

1797213888678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23041203719.

The product of its digits is 455196672, while the sum is 75.

The spelling of 1797213888678 in words is "one trillion, seven hundred ninety-seven billion, two hundred thirteen million, eight hundred eighty-eight thousand, six hundred seventy-eight".