611080539720 has 256 divisors, whose sum is σ = 2121028416000. Its totient is φ = 137952731136.

The previous prime is 611080539689. The next prime is 611080539733. The reversal of 611080539720 is 27935080116.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 75727846 + ... + 75735914.

It is an arithmetic number, because the mean of its divisors is an integer number (8285267250).

Almost surely, 2^611080539720 is an apocalyptic number.

611080539720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 611080539720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1060514208000).

611080539720 is an abundant number, since it is smaller than the sum of its proper divisors (1509947876280).

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

611080539720 is a wasteful number, since it uses less digits than its factorization.

611080539720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9192 (or 9188 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The spelling of 611080539720 in words is "six hundred eleven billion, eighty million, five hundred thirty-nine thousand, seven hundred twenty".