61370602577 has 4 divisors (see below), whose sum is σ = 61371188916. Its totient is φ = 61370016240.

The previous prime is 61370602571. The next prime is 61370602589. The reversal of 61370602577 is 77520607316.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 15352201216 + 46018401361 = 123904^2 + 214519^2 .

It is a cyclic number.

It is not a de Polignac number, because 61370602577 - 2⁴ = 61370602561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61370602571) 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 in 3 ways as a sum of consecutive naturals, for example, 88574 + ... + 361367.

It is an arithmetic number, because the mean of its divisors is an integer number (15342797229).

Almost surely, 2^61370602577 is an apocalyptic number.

It is an amenable number.

61370602577 is a deficient number, since it is larger than the sum of its proper divisors (586339).

61370602577 is a wasteful number, since it uses less digits than its factorization.

61370602577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586338.

The product of its (nonzero) digits is 370440, while the sum is 44.

The spelling of 61370602577 in words is "sixty-one billion, three hundred seventy million, six hundred two thousand, five hundred seventy-seven".