681355534202 has 16 divisors (see below), whose sum is σ = 1236746180160. Its totient is φ = 274832484288.

The previous prime is 681355534199. The next prime is 681355534231. The reversal of 681355534202 is 202435553186.

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, 1431418952 + ... + 1431419427.

It is an arithmetic number, because the mean of its divisors is an integer number (77296636260).

Almost surely, 2^681355534202 is an apocalyptic number.

681355534202 is a deficient number, since it is larger than the sum of its proper divisors (555390645958).

681355534202 is a wasteful number, since it uses less digits than its factorization.

681355534202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2862838405.

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 681355534202 in words is "six hundred eighty-one billion, three hundred fifty-five million, five hundred thirty-four thousand, two hundred two".