68673815574 has 256 divisors, whose sum is σ = 186878361600. Its totient is φ = 16314794496.

The previous prime is 68673815549. The next prime is 68673815671. The reversal of 68673815574 is 47551837686.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 20154979 + ... + 20158385.

It is an arithmetic number, because the mean of its divisors is an integer number (729993600).

Almost surely, 2^68673815574 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68673815574, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93439180800).

68673815574 is an abundant number, since it is smaller than the sum of its proper divisors (118204546026).

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

68673815574 is a wasteful number, since it uses less digits than its factorization.

68673815574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3547.

The product of its digits is 33868800, while the sum is 60.

The spelling of 68673815574 in words is "sixty-eight billion, six hundred seventy-three million, eight hundred fifteen thousand, five hundred seventy-four".