61105136241140 has 12 divisors (see below), whose sum is σ = 128320786106436. Its totient is φ = 24442054496448.

The previous prime is 61105136241137. The next prime is 61105136241203. The reversal of 61105136241140 is 4114263150116.

It can be written as a sum of positive squares in 2 ways, for example, as 31157339679376 + 29947796561764 = 5581876^2 + 5472458^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61105136241140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1527628406009 + ... + 1527628406048.

It is an arithmetic number, because the mean of its divisors is an integer number (10693398842203).

Almost surely, 2^{61105136241140} is an apocalyptic number.

It is an amenable number.

61105136241140 is an abundant number, since it is smaller than the sum of its proper divisors (67215649865296).

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

61105136241140 is a wasteful number, since it uses less digits than its factorization.

61105136241140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3055256812066 (or 3055256812064 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

Adding to 61105136241140 its reverse (4114263150116), we get a palindrome (65219399391256).

The spelling of 61105136241140 in words is "sixty-one trillion, one hundred five billion, one hundred thirty-six million, two hundred forty-one thousand, one hundred forty".