61702063201 has 9 divisors (see below), whose sum is σ = 62425501203. Its totient is φ = 60986922480.

The previous prime is 61702063169. The next prime is 61702063231. The reversal of 61702063201 is 10236020716.

The square root of 61702063201 is 248399.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 11848104801 + 49853958400 = 108849^2 + 223280^2 .

It is not a de Polignac number, because 61702063201 - 2⁵ = 61702063169 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 61702063201.

It is not an unprimeable number, because it can be changed into a prime (61702063231) 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 8 ways as a sum of consecutive naturals, for example, 22106116 + ... + 22108906.

Almost surely, 2^61702063201 is an apocalyptic number.

61702063201 is the 248399-th square number.

61702063201 is the 124200-th centered octagonal number.

It is an amenable number.

61702063201 is a deficient number, since it is larger than the sum of its proper divisors (723438002).

61702063201 is an frugal number, since it uses more digits than its factorization.

61702063201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5760 (or 2880 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

Adding to 61702063201 its reverse (10236020716), we get a palindrome (71938083917).

The spelling of 61702063201 in words is "sixty-one billion, seven hundred two million, sixty-three thousand, two hundred one".