61027140505061 has 4 divisors (see below), whose sum is σ = 61033482314592. Its totient is φ = 61020798695532.

The previous prime is 61027140505039. The next prime is 61027140505103. The reversal of 61027140505061 is 16050504172016.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61027140505061 - 2¹⁰ = 61027140504037 is a prime.

It is a super-2 number, since 2×61027140505061² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61020140505061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3170890331 + ... + 3170909576.

It is an arithmetic number, because the mean of its divisors is an integer number (15258370578648).

Almost surely, 2^{61027140505061} is an apocalyptic number.

It is an amenable number.

61027140505061 is a deficient number, since it is larger than the sum of its proper divisors (6341809531).

61027140505061 is an equidigital number, since it uses as much as digits as its factorization.

61027140505061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6341809530.

The product of its (nonzero) digits is 50400, while the sum is 38.

Adding to 61027140505061 its reverse (16050504172016), we get a palindrome (77077644677077).

The spelling of 61027140505061 in words is "sixty-one trillion, twenty-seven billion, one hundred forty million, five hundred five thousand, sixty-one".