680491568103954 has 32 divisors (see below), whose sum is σ = 1383296931109824. Its totient is φ = 223111570841280.

The previous prime is 680491568103937. The next prime is 680491568103959. The reversal of 680491568103954 is 459301865194086.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (680491568103959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238797792 + ... + 241630644.

It is an arithmetic number, because the mean of its divisors is an integer number (43228029097182).

Almost surely, 2^{680491568103954} is an apocalyptic number.

680491568103954 is an abundant number, since it is smaller than the sum of its proper divisors (702805363005870).

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

680491568103954 is a wasteful number, since it uses less digits than its factorization.

680491568103954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3489242.

The product of its (nonzero) digits is 223948800, while the sum is 69.

The spelling of 680491568103954 in words is "six hundred eighty trillion, four hundred ninety-one billion, five hundred sixty-eight million, one hundred three thousand, nine hundred fifty-four".