61142113613461 has 2 divisors, whose sum is σ = 61142113613462. Its totient is φ = 61142113613460.

The previous prime is 61142113613417. The next prime is 61142113613513. The reversal of 61142113613461 is 16431631124116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52363965327025 + 8778148286436 = 7236295^2 + 2962794^2 .

It is a cyclic number.

It is not a de Polignac number, because 61142113613461 - 2²³ = 61142105224853 is a prime.

It is a super-3 number, since 3×61142113613461³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61142113613261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30571056806730 + 30571056806731.

It is an arithmetic number, because the mean of its divisors is an integer number (30571056806731).

Almost surely, 2^{61142113613461} is an apocalyptic number.

It is an amenable number.

61142113613461 is a deficient number, since it is larger than the sum of its proper divisors (1).

61142113613461 is an equidigital number, since it uses as much as digits as its factorization.

61142113613461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 40.

Adding to 61142113613461 its reverse (16431631124116), we get a palindrome (77573744737577).

The spelling of 61142113613461 in words is "sixty-one trillion, one hundred forty-two billion, one hundred thirteen million, six hundred thirteen thousand, four hundred sixty-one".