611401322064 has 160 divisors (see below), whose sum is σ = 1721098592640. Its totient is φ = 185897631744.

The previous prime is 611401322041. The next prime is 611401322113. The reversal of 611401322064 is 460223104116.

611401322064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 183989107 + ... + 183992429.

It is an arithmetic number, because the mean of its divisors is an integer number (10756866204).

Almost surely, 2^611401322064 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 611401322064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (860549296320).

611401322064 is an abundant number, since it is smaller than the sum of its proper divisors (1109697270576).

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

611401322064 is a wasteful number, since it uses less digits than its factorization.

611401322064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6749 (or 6743 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The spelling of 611401322064 in words is "six hundred eleven billion, four hundred one million, three hundred twenty-two thousand, sixty-four".