611161271540 has 48 divisors (see below), whose sum is σ = 1285145367744. Its totient is φ = 244139616000.

The previous prime is 611161271447. The next prime is 611161271551. The reversal of 611161271540 is 45172161116.

It is a super-2 number, since 2×611161271540² (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 611161271540.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93346547 + ... + 93353093.

It is an arithmetic number, because the mean of its divisors is an integer number (26773861828).

Almost surely, 2^611161271540 is an apocalyptic number.

It is an amenable number.

611161271540 is an abundant number, since it is smaller than the sum of its proper divisors (673984096204).

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

611161271540 is a wasteful number, since it uses less digits than its factorization.

611161271540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12048 (or 12046 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 35.

The spelling of 611161271540 in words is "six hundred eleven billion, one hundred sixty-one million, two hundred seventy-one thousand, five hundred forty".