61105100647 has 2 divisors, whose sum is σ = 61105100648. Its totient is φ = 61105100646.

The previous prime is 61105100633. The next prime is 61105100653. The reversal of 61105100647 is 74600150116.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61105100647 - 2¹⁹ = 61104576359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61105100687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30552550323 + 30552550324.

It is an arithmetic number, because the mean of its divisors is an integer number (30552550324).

Almost surely, 2^61105100647 is an apocalyptic number.

61105100647 is a deficient number, since it is larger than the sum of its proper divisors (1).

61105100647 is an equidigital number, since it uses as much as digits as its factorization.

61105100647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 31.

The spelling of 61105100647 in words is "sixty-one billion, one hundred five million, one hundred thousand, six hundred forty-seven".