61104603421 has 16 divisors (see below), whose sum is σ = 65911809600. Its totient is φ = 56457475200.

The previous prime is 61104603397. The next prime is 61104603433. The reversal of 61104603421 is 12430640116.

It is a cyclic number.

It is not a de Polignac number, because 61104603421 - 2¹⁹ = 61104079133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61104603421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61104603481) 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, 2614375 + ... + 2637643.

It is an arithmetic number, because the mean of its divisors is an integer number (4119488100).

Almost surely, 2^61104603421 is an apocalyptic number.

It is an amenable number.

61104603421 is a deficient number, since it is larger than the sum of its proper divisors (4807206179).

61104603421 is a wasteful number, since it uses less digits than its factorization.

61104603421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26700.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 61104603421 in words is "sixty-one billion, one hundred four million, six hundred three thousand, four hundred twenty-one".