61089205390 has 32 divisors (see below), whose sum is σ = 118023778080. Its totient is φ = 22683239424.

The previous prime is 61089205349. The next prime is 61089205391. The reversal of 61089205390 is 9350298016.

It is a happy number.

61089205390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61089205391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2448880 + ... + 2473699.

It is an arithmetic number, because the mean of its divisors is an integer number (3688243065).

Almost surely, 2^61089205390 is an apocalyptic number.

61089205390 is a deficient number, since it is larger than the sum of its proper divisors (56934572690).

61089205390 is a wasteful number, since it uses less digits than its factorization.

61089205390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4922676.

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 61089205390 in words is "sixty-one billion, eighty-nine million, two hundred five thousand, three hundred ninety".