61889000587 has 2 divisors, whose sum is σ = 61889000588. Its totient is φ = 61889000586.

The previous prime is 61889000573. The next prime is 61889000647. The reversal of 61889000587 is 78500098816.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61889000587 is a prime.

It is not a weakly prime, because it can be changed into another prime (61889003587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30944500293 + 30944500294.

It is an arithmetic number, because the mean of its divisors is an integer number (30944500294).

Almost surely, 2^61889000587 is an apocalyptic number.

61889000587 is a deficient number, since it is larger than the sum of its proper divisors (1).

61889000587 is an equidigital number, since it uses as much as digits as its factorization.

61889000587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 52.

The spelling of 61889000587 in words is "sixty-one billion, eight hundred eighty-nine million, five hundred eighty-seven", and thus it is an aban number.