61805254627 has 2 divisors, whose sum is σ = 61805254628. Its totient is φ = 61805254626.

The previous prime is 61805254597. The next prime is 61805254649. The reversal of 61805254627 is 72645250816.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61805254627 - 2²⁷ = 61671036899 is a prime.

It is not a weakly prime, because it can be changed into another prime (61805254327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30902627313 + 30902627314.

It is an arithmetic number, because the mean of its divisors is an integer number (30902627314).

Almost surely, 2^61805254627 is an apocalyptic number.

61805254627 is a deficient number, since it is larger than the sum of its proper divisors (1).

61805254627 is an equidigital number, since it uses as much as digits as its factorization.

61805254627 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 806400, while the sum is 46.

The spelling of 61805254627 in words is "sixty-one billion, eight hundred five million, two hundred fifty-four thousand, six hundred twenty-seven".