68496908032 has 144 divisors (see below), whose sum is σ = 157764096000. Its totient is φ = 29074636800.

The previous prime is 68496908021. The next prime is 68496908071. The reversal of 68496908032 is 23080969486.

It is a happy number.

It is a super-2 number, since 2×68496908032² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142999569 + ... + 143000047.

It is an arithmetic number, because the mean of its divisors is an integer number (1095584000).

Almost surely, 2^68496908032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68496908032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78882048000).

68496908032 is an abundant number, since it is smaller than the sum of its proper divisors (89267187968).

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

68496908032 is a wasteful number, since it uses less digits than its factorization.

68496908032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102 (or 1088 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 55.

The spelling of 68496908032 in words is "sixty-eight billion, four hundred ninety-six million, nine hundred eight thousand, thirty-two".