61859761471 has 2 divisors, whose sum is σ = 61859761472. Its totient is φ = 61859761470.

The previous prime is 61859761459. The next prime is 61859761493. The reversal of 61859761471 is 17416795816.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61859761471 - 2¹³ = 61859753279 is a prime.

It is a super-3 number, since 3×61859761471³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61859761871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30929880735 + 30929880736.

It is an arithmetic number, because the mean of its divisors is an integer number (30929880736).

Almost surely, 2^61859761471 is an apocalyptic number.

61859761471 is a deficient number, since it is larger than the sum of its proper divisors (1).

61859761471 is an equidigital number, since it uses as much as digits as its factorization.

61859761471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 55.

The spelling of 61859761471 in words is "sixty-one billion, eight hundred fifty-nine million, seven hundred sixty-one thousand, four hundred seventy-one".