61484130261 has 12 divisors (see below), whose sum is σ = 89725982892. Its totient is φ = 40566848256.

The previous prime is 61484130251. The next prime is 61484130263. The reversal of 61484130261 is 16203148416.

61484130261 is a `hidden beast` number, since 614 + 8 + 4 + 1 + 30 + 2 + 6 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11361428100 + 50122702161 = 106590^2 + 223881^2 .

It is not a de Polignac number, because 61484130261 - 2⁵ = 61484130229 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61484130263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35213406 + ... + 35215151.

It is an arithmetic number, because the mean of its divisors is an integer number (7477165241).

Almost surely, 2^61484130261 is an apocalyptic number.

It is an amenable number.

61484130261 is a deficient number, since it is larger than the sum of its proper divisors (28241852631).

61484130261 is a wasteful number, since it uses less digits than its factorization.

61484130261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70428660 (or 70428657 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

Adding to 61484130261 its reverse (16203148416), we get a palindrome (77687278677).

The spelling of 61484130261 in words is "sixty-one billion, four hundred eighty-four million, one hundred thirty thousand, two hundred sixty-one".