691968850810 has 16 divisors (see below), whose sum is σ = 1245563972352. Its totient is φ = 276783086800.

The previous prime is 691968850801. The next prime is 691968850843. The reversal of 691968850810 is 18058869196.

It is a super-2 number, since 2×691968850810² (a number of 24 digits) contains 22 as substring.

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, 137055 + ... + 1184365.

It is an arithmetic number, because the mean of its divisors is an integer number (77847748272).

Almost surely, 2^691968850810 is an apocalyptic number.

691968850810 is a deficient number, since it is larger than the sum of its proper divisors (553595121542).

691968850810 is a wasteful number, since it uses less digits than its factorization.

691968850810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113389.

The product of its (nonzero) digits is 7464960, while the sum is 61.

The spelling of 691968850810 in words is "six hundred ninety-one billion, nine hundred sixty-eight million, eight hundred fifty thousand, eight hundred ten".