61230461011540 has 24 divisors (see below), whose sum is σ = 128595318584040. Its totient is φ = 24490022412288.

The previous prime is 61230461011453. The next prime is 61230461011543. The reversal of 61230461011540 is 4511016403216.

It can be written as a sum of positive squares in 4 ways, for example, as 11917215556 + 61218543795984 = 109166^2 + 7824228^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61230461011496 and 61230461011505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61230461011543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134892277 + ... + 135345436.

It is an arithmetic number, because the mean of its divisors is an integer number (5358138274335).

Almost surely, 2^{61230461011540} is an apocalyptic number.

It is an amenable number.

61230461011540 is an abundant number, since it is smaller than the sum of its proper divisors (67364857572500).

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

61230461011540 is a wasteful number, since it uses less digits than its factorization.

61230461011540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270249051 (or 270249049 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

Adding to 61230461011540 its reverse (4511016403216), we get a palindrome (65741477414756).

The spelling of 61230461011540 in words is "sixty-one trillion, two hundred thirty billion, four hundred sixty-one million, eleven thousand, five hundred forty".