61604012260 has 36 divisors (see below), whose sum is σ = 150489803772. Its totient is φ = 21121375296.

The previous prime is 61604012201. The next prime is 61604012273. The reversal of 61604012260 is 6221040616.

61604012260 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 29826671616 + 31777340644 = 172704^2 + 178262^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31429639 + ... + 31431598.

It is an arithmetic number, because the mean of its divisors is an integer number (4180272327).

Almost surely, 2^61604012260 is an apocalyptic number.

It is an amenable number.

61604012260 is an abundant number, since it is smaller than the sum of its proper divisors (88885791512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61604012260 is a wasteful number, since it uses less digits than its factorization.

61604012260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62861260 (or 62861251 counting only the distinct ones).

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

Adding to 61604012260 its reverse (6221040616), we get a palindrome (67825052876).

The spelling of 61604012260 in words is "sixty-one billion, six hundred four million, twelve thousand, two hundred sixty".