61605411202 has 4 divisors (see below), whose sum is σ = 92408116806. Its totient is φ = 30802705600.

The previous prime is 61605411193. The next prime is 61605411251. The reversal of 61605411202 is 20211450616.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 35883346041 + 25722065161 = 189429^2 + 160381^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15401352799 + ... + 15401352802.

Almost surely, 2^61605411202 is an apocalyptic number.

61605411202 is a deficient number, since it is larger than the sum of its proper divisors (30802705604).

61605411202 is a wasteful number, since it uses less digits than its factorization.

61605411202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30802705603.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 61605411202 its reverse (20211450616), we get a palindrome (81816861818).

The spelling of 61605411202 in words is "sixty-one billion, six hundred five million, four hundred eleven thousand, two hundred two".