68894069690 has 32 divisors (see below), whose sum is σ = 126668862720. Its totient is φ = 26966814784.

The previous prime is 68894069687. The next prime is 68894069747. The reversal of 68894069690 is 9696049886.

It is a super-2 number, since 2×68894069690² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5108276 + ... + 5121744.

It is an arithmetic number, because the mean of its divisors is an integer number (3958401960).

Almost surely, 2^68894069690 is an apocalyptic number.

68894069690 is a deficient number, since it is larger than the sum of its proper divisors (57774793030).

68894069690 is a wasteful number, since it uses less digits than its factorization.

68894069690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24406.

The product of its (nonzero) digits is 40310784, while the sum is 65.

The spelling of 68894069690 in words is "sixty-eight billion, eight hundred ninety-four million, sixty-nine thousand, six hundred ninety".