68424107640 has 192 divisors, whose sum is σ = 239545965600. Its totient is φ = 15590034432.

The previous prime is 68424107611. The next prime is 68424107657. The reversal of 68424107640 is 4670142486.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 68424107592 and 68424107601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1845606 + ... + 1882314.

Almost surely, 2^68424107640 is an apocalyptic number.

68424107640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68424107640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119772982800).

68424107640 is an abundant number, since it is smaller than the sum of its proper divisors (171121857960).

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

68424107640 is a wasteful number, since it uses less digits than its factorization.

68424107640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37054 (or 37043 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 42.

The spelling of 68424107640 in words is "sixty-eight billion, four hundred twenty-four million, one hundred seven thousand, six hundred forty".