61589439901 has 16 divisors (see below), whose sum is σ = 69004353600. Its totient is φ = 54484201600.

The previous prime is 61589439887. The next prime is 61589439941. The reversal of 61589439901 is 10993498516.

It is a cyclic number.

It is not a de Polignac number, because 61589439901 - 2⁹ = 61589439389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61589439941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91 + ... + 350968.

It is an arithmetic number, because the mean of its divisors is an integer number (4312772100).

Almost surely, 2^61589439901 is an apocalyptic number.

It is an amenable number.

61589439901 is a deficient number, since it is larger than the sum of its proper divisors (7414913699).

61589439901 is a wasteful number, since it uses less digits than its factorization.

61589439901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351500.

The product of its (nonzero) digits is 2099520, while the sum is 55.

The spelling of 61589439901 in words is "sixty-one billion, five hundred eighty-nine million, four hundred thirty-nine thousand, nine hundred one".