61898460593 has 2 divisors, whose sum is σ = 61898460594. Its totient is φ = 61898460592.

The previous prime is 61898460587. The next prime is 61898460641. The reversal of 61898460593 is 39506489816.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59622407329 + 2276053264 = 244177^2 + 47708^2 .

It is a cyclic number.

It is not a de Polignac number, because 61898460593 - 2⁴ = 61898460577 is a prime.

It is not a weakly prime, because it can be changed into another prime (61898460553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30949230296 + 30949230297.

It is an arithmetic number, because the mean of its divisors is an integer number (30949230297).

Almost surely, 2^61898460593 is an apocalyptic number.

It is an amenable number.

61898460593 is a deficient number, since it is larger than the sum of its proper divisors (1).

61898460593 is an equidigital number, since it uses as much as digits as its factorization.

61898460593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11197440, while the sum is 59.

The spelling of 61898460593 in words is "sixty-one billion, eight hundred ninety-eight million, four hundred sixty thousand, five hundred ninety-three".