61258117783 has 2 divisors, whose sum is σ = 61258117784. Its totient is φ = 61258117782.

The previous prime is 61258117777. The next prime is 61258117787. The reversal of 61258117783 is 38771185216.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61258117783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61258117787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30629058891 + 30629058892.

It is an arithmetic number, because the mean of its divisors is an integer number (30629058892).

Almost surely, 2^61258117783 is an apocalyptic number.

61258117783 is a deficient number, since it is larger than the sum of its proper divisors (1).

61258117783 is an equidigital number, since it uses as much as digits as its factorization.

61258117783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 564480, while the sum is 49.

The spelling of 61258117783 in words is "sixty-one billion, two hundred fifty-eight million, one hundred seventeen thousand, seven hundred eighty-three".