61335928352779 has 4 divisors (see below), whose sum is σ = 61336103981776. Its totient is φ = 61335752723784.

The previous prime is 61335928352773. The next prime is 61335928352801. The reversal of 61335928352779 is 97725382953316.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61335928352779 - 2⁷ = 61335928352651 is a prime.

It is a super-2 number, since 2×61335928352779² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61335928352773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87289599 + ... + 87989464.

It is an arithmetic number, because the mean of its divisors is an integer number (15334025995444).

Almost surely, 2^{61335928352779} is an apocalyptic number.

61335928352779 is a deficient number, since it is larger than the sum of its proper divisors (175628997).

61335928352779 is a wasteful number, since it uses less digits than its factorization.

61335928352779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175628996.

The product of its digits is 514382400, while the sum is 70.

The spelling of 61335928352779 in words is "sixty-one trillion, three hundred thirty-five billion, nine hundred twenty-eight million, three hundred fifty-two thousand, seven hundred seventy-nine".