61601289379 has 6 divisors (see below), whose sum is σ = 71658642804. Its totient is φ = 52801105140.

The previous prime is 61601289361. The next prime is 61601289389. The reversal of 61601289379 is 97398210616.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-61601289379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61601289329) 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 5 ways as a sum of consecutive naturals, for example, 628584537 + ... + 628584634.

It is an arithmetic number, because the mean of its divisors is an integer number (11943107134).

Almost surely, 2^61601289379 is an apocalyptic number.

61601289379 is a deficient number, since it is larger than the sum of its proper divisors (10057353425).

61601289379 is a wasteful number, since it uses less digits than its factorization.

61601289379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257169185 (or 1257169178 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 61601289379 in words is "sixty-one billion, six hundred one million, two hundred eighty-nine thousand, three hundred seventy-nine".