611010120072 has 128 divisors (see below), whose sum is σ = 1695463488000. Its totient is φ = 181949898240.

The previous prime is 611010120059. The next prime is 611010120103. The reversal of 611010120072 is 270021010116.

It is a happy 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, 3750079 + ... + 3909617.

It is an arithmetic number, because the mean of its divisors is an integer number (13245808500).

Almost surely, 2^611010120072 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 611010120072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (847731744000).

611010120072 is an abundant number, since it is smaller than the sum of its proper divisors (1084453367928).

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

611010120072 is a wasteful number, since it uses less digits than its factorization.

611010120072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159811 (or 159807 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 21.

Adding to 611010120072 its reverse (270021010116), we get a palindrome (881031130188).

The spelling of 611010120072 in words is "six hundred eleven billion, ten million, one hundred twenty thousand, seventy-two".