61767430666583 has 2 divisors, whose sum is σ = 61767430666584. Its totient is φ = 61767430666582.

The previous prime is 61767430666567. The next prime is 61767430666637. The reversal of 61767430666583 is 38566603476716.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61767430666583 - 2⁴ = 61767430666567 is a prime.

It is a super-2 number, since 2×61767430666583² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61767430666523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30883715333291 + 30883715333292.

It is an arithmetic number, because the mean of its divisors is an integer number (30883715333292).

Almost surely, 2^{61767430666583} is an apocalyptic number.

61767430666583 is a deficient number, since it is larger than the sum of its proper divisors (1).

61767430666583 is an equidigital number, since it uses as much as digits as its factorization.

61767430666583 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 548674560, while the sum is 68.

The spelling of 61767430666583 in words is "sixty-one trillion, seven hundred sixty-seven billion, four hundred thirty million, six hundred sixty-six thousand, five hundred eighty-three".