611172424428 has 96 divisors (see below), whose sum is σ = 1568132907264. Its totient is φ = 184485869568.

The previous prime is 611172424363. The next prime is 611172424439. The reversal of 611172424428 is 824424271116.

It is a super-2 number, since 2×611172424428² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 611172424428.

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, 67776 + ... + 1107672.

It is an arithmetic number, because the mean of its divisors is an integer number (16334717784).

Almost surely, 2^611172424428 is an apocalyptic number.

611172424428 is a gapful number since it is divisible by the number (68) 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 611172424428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (784066453632).

611172424428 is an abundant number, since it is smaller than the sum of its proper divisors (956960482836).

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

611172424428 is a wasteful number, since it uses less digits than its factorization.

611172424428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040031 (or 1040029 counting only the distinct ones).

The product of its digits is 172032, while the sum is 42.

The spelling of 611172424428 in words is "six hundred eleven billion, one hundred seventy-two million, four hundred twenty-four thousand, four hundred twenty-eight".