61602532321 has 4 divisors (see below), whose sum is σ = 67202762544. Its totient is φ = 56002302100.

The previous prime is 61602532301. The next prime is 61602532331. The reversal of 61602532321 is 12323520616.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61602532321 - 2²⁵ = 61568977889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61602532301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2800115095 + ... + 2800115116.

It is an arithmetic number, because the mean of its divisors is an integer number (16800690636).

Almost surely, 2^61602532321 is an apocalyptic number.

It is an amenable number.

61602532321 is a deficient number, since it is larger than the sum of its proper divisors (5600230223).

61602532321 is a wasteful number, since it uses less digits than its factorization.

61602532321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5600230222.

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 61602532321 in words is "sixty-one billion, six hundred two million, five hundred thirty-two thousand, three hundred twenty-one".