61124064389 has 2 divisors, whose sum is σ = 61124064390. Its totient is φ = 61124064388.

The previous prime is 61124064377. The next prime is 61124064439. The reversal of 61124064389 is 98346042116.

61124064389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57531860164 + 3592204225 = 239858^2 + 59935^2 .

It is a cyclic number.

It is not a de Polignac number, because 61124064389 - 2⁴ = 61124064373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61124064889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30562032194 + 30562032195.

It is an arithmetic number, because the mean of its divisors is an integer number (30562032195).

Almost surely, 2^61124064389 is an apocalyptic number.

It is an amenable number.

61124064389 is a deficient number, since it is larger than the sum of its proper divisors (1).

61124064389 is an equidigital number, since it uses as much as digits as its factorization.

61124064389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 61124064389 in words is "sixty-one billion, one hundred twenty-four million, sixty-four thousand, three hundred eighty-nine".