68637611128046 has 4 divisors (see below), whose sum is σ = 102956416692072. Its totient is φ = 34318805564022.

The previous prime is 68637611128043. The next prime is 68637611128081. The reversal of 68637611128046 is 64082111673686.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×68637611128046² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68637611128043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17159402782010 + ... + 17159402782013.

It is an arithmetic number, because the mean of its divisors is an integer number (25739104173018).

Almost surely, 2^{68637611128046} is an apocalyptic number.

68637611128046 is a deficient number, since it is larger than the sum of its proper divisors (34318805564026).

68637611128046 is a wasteful number, since it uses less digits than its factorization.

68637611128046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34318805564025.

The product of its (nonzero) digits is 13934592, while the sum is 59.

The spelling of 68637611128046 in words is "sixty-eight trillion, six hundred thirty-seven billion, six hundred eleven million, one hundred twenty-eight thousand, forty-six".