61261042633530 has 16 divisors (see below), whose sum is σ = 147026502320544. Its totient is φ = 16336278035600.

The previous prime is 61261042633523. The next prime is 61261042633547. The reversal of 61261042633530 is 3533624016216.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1021017377196 + ... + 1021017377255.

It is an arithmetic number, because the mean of its divisors is an integer number (9189156395034).

Almost surely, 2^{61261042633530} is an apocalyptic number.

61261042633530 is an abundant number, since it is smaller than the sum of its proper divisors (85765459687014).

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

61261042633530 is a wasteful number, since it uses less digits than its factorization.

61261042633530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2042034754461.

The product of its (nonzero) digits is 466560, while the sum is 42.

Adding to 61261042633530 its reverse (3533624016216), we get a palindrome (64794666649746).

The spelling of 61261042633530 in words is "sixty-one trillion, two hundred sixty-one billion, forty-two million, six hundred thirty-three thousand, five hundred thirty".