678161239558590 has 64 divisors (see below), whose sum is σ = 1629099668385792. Its totient is φ = 180674924976000.

The previous prime is 678161239558573. The next prime is 678161239558591. The reversal of 678161239558590 is 95855932161876.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678161239558591) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3540273315 + ... + 3540464865.

It is an arithmetic number, because the mean of its divisors is an integer number (25454682318528).

Almost surely, 2^{678161239558590} is an apocalyptic number.

678161239558590 is an abundant number, since it is smaller than the sum of its proper divisors (950938428827202).

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

678161239558590 is a wasteful number, since it uses less digits than its factorization.

678161239558590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300625.

The product of its (nonzero) digits is 979776000, while the sum is 75.

The spelling of 678161239558590 in words is "six hundred seventy-eight trillion, one hundred sixty-one billion, two hundred thirty-nine million, five hundred fifty-eight thousand, five hundred ninety".