601951777728 has 168 divisors, whose sum is σ = 1921030480512. Its totient is φ = 162934184448.

The previous prime is 601951777727. The next prime is 601951777771. The reversal of 601951777728 is 827777159106.

It is a tau number, because it is divible by the number of its divisors (168).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (601951777727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135150 + ... + 1105517.

Almost surely, 2^601951777728 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 601951777728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (960515240256).

601951777728 is an abundant number, since it is smaller than the sum of its proper divisors (1319078702784).

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

601951777728 is a wasteful number, since it uses less digits than its factorization.

601951777728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240727 (or 1240698 counting only the distinct ones).

The product of its (nonzero) digits is 10372320, while the sum is 60.

The spelling of 601951777728 in words is "six hundred one billion, nine hundred fifty-one million, seven hundred seventy-seven thousand, seven hundred twenty-eight".