68433263780 has 72 divisors (see below), whose sum is σ = 167430260088. Its totient is φ = 23426683392.

The previous prime is 68433263741. The next prime is 68433263803. The reversal of 68433263780 is 8736233486.

It can be written as a sum of positive squares in 4 ways, for example, as 1228923136 + 67204340644 = 35056^2 + 259238^2 .

It is a super-2 number, since 2×68433263780² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 586472 + ... + 693408.

It is an arithmetic number, because the mean of its divisors is an integer number (2325420279).

Almost surely, 2^68433263780 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 68433263780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83715130044).

68433263780 is an abundant number, since it is smaller than the sum of its proper divisors (98996996308).

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

68433263780 is a wasteful number, since it uses less digits than its factorization.

68433263780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107613 (or 107604 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 50.

The spelling of 68433263780 in words is "sixty-eight billion, four hundred thirty-three million, two hundred sixty-three thousand, seven hundred eighty".