611401331125 has 16 divisors (see below), whose sum is σ = 821723391216. Its totient is φ = 451496366400.

The previous prime is 611401331119. The next prime is 611401331141. The reversal of 611401331125 is 521133104116.

It can be written as a sum of positive squares in 8 ways, for example, as 97655000004 + 513746331121 = 312498^2 + 716761^2 .

It is not a de Polignac number, because 611401331125 - 2⁷ = 611401330997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 611401331093 and 611401331102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188121862 + ... + 188125111.

It is an arithmetic number, because the mean of its divisors is an integer number (51357711951).

Almost surely, 2^611401331125 is an apocalyptic number.

611401331125 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

611401331125 is a deficient number, since it is larger than the sum of its proper divisors (210322060091).

611401331125 is a wasteful number, since it uses less digits than its factorization.

611401331125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376247001 (or 376246991 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The spelling of 611401331125 in words is "six hundred eleven billion, four hundred one million, three hundred thirty-one thousand, one hundred twenty-five".