68026237709640 has 128 divisors (see below), whose sum is σ = 233771460168960. Its totient is φ = 15512944656384.

The previous prime is 68026237709593. The next prime is 68026237709641. The reversal of 68026237709640 is 4690773262086.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (68026237709641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93150849 + ... + 93878288.

It is an arithmetic number, because the mean of its divisors is an integer number (1826339532570).

Almost surely, 2^{68026237709640} is an apocalyptic number.

68026237709640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68026237709640 is an abundant number, since it is smaller than the sum of its proper divisors (165745222459320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68026237709640 is a wasteful number, since it uses less digits than its factorization.

68026237709640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187029591 (or 187029587 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 60.

The spelling of 68026237709640 in words is "sixty-eight trillion, twenty-six billion, two hundred thirty-seven million, seven hundred nine thousand, six hundred forty".