68630194815 has 64 divisors (see below), whose sum is σ = 137000242176. Its totient is φ = 28563674112.

The previous prime is 68630194769. The next prime is 68630194859. The reversal of 68630194815 is 51849103686.

It is not a de Polignac number, because 68630194815 - 2¹⁶ = 68630129279 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 244729 + ... + 444018.

It is an arithmetic number, because the mean of its divisors is an integer number (2140628784).

Almost surely, 2^68630194815 is an apocalyptic number.

68630194815 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

68630194815 is a deficient number, since it is larger than the sum of its proper divisors (68370047361).

68630194815 is a wasteful number, since it uses less digits than its factorization.

68630194815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688848.

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 68630194815 in words is "sixty-eight billion, six hundred thirty million, one hundred ninety-four thousand, eight hundred fifteen".