61676820579 has 16 divisors (see below), whose sum is σ = 89741193984. Its totient is φ = 37367618400.

The previous prime is 61676820571. The next prime is 61676820617. The reversal of 61676820579 is 97502867616.

61676820579 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61676820579 - 2³ = 61676820571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61676820571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204279 + ... + 406304.

It is an arithmetic number, because the mean of its divisors is an integer number (5608824624).

Almost surely, 2^61676820579 is an apocalyptic number.

61676820579 is a deficient number, since it is larger than the sum of its proper divisors (28064373405).

61676820579 is a wasteful number, since it uses less digits than its factorization.

61676820579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613658.

The product of its (nonzero) digits is 7620480, while the sum is 57.

The spelling of 61676820579 in words is "sixty-one billion, six hundred seventy-six million, eight hundred twenty thousand, five hundred seventy-nine".