68301437644 has 24 divisors (see below), whose sum is σ = 130622864400. Its totient is φ = 30991534080.

The previous prime is 68301437641. The next prime is 68301437657. The reversal of 68301437644 is 44673410386.

It is a junction number, because it is equal to n+sod(n) for n = 68301437594 and 68301437603.

It is not an unprimeable number, because it can be changed into a prime (68301437641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1339029 + ... + 1389100.

It is an arithmetic number, because the mean of its divisors is an integer number (5442619350).

Almost surely, 2^68301437644 is an apocalyptic number.

It is an amenable number.

68301437644 is a deficient number, since it is larger than the sum of its proper divisors (62321426756).

68301437644 is a wasteful number, since it uses less digits than its factorization.

68301437644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2728713 (or 2728711 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 46.

The spelling of 68301437644 in words is "sixty-eight billion, three hundred one million, four hundred thirty-seven thousand, six hundred forty-four".