61301561602 has 4 divisors (see below), whose sum is σ = 91952342406. Its totient is φ = 30650780800.

The previous prime is 61301561597. The next prime is 61301561609. The reversal of 61301561602 is 20616510316.

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., 47878253721 + 13423307881 = 218811^2 + 115859^2 .

It is not an unprimeable number, because it can be changed into a prime (61301561609) 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 as a sum of consecutive naturals, namely, 15325390399 + ... + 15325390402.

Almost surely, 2^61301561602 is an apocalyptic number.

61301561602 is a deficient number, since it is larger than the sum of its proper divisors (30650780804).

61301561602 is a wasteful number, since it uses less digits than its factorization.

61301561602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30650780803.

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 61301561602 in words is "sixty-one billion, three hundred one million, five hundred sixty-one thousand, six hundred two".