61673511679 has 8 divisors (see below), whose sum is σ = 68212699520. Its totient is φ = 55390762656.

The previous prime is 61673511673. The next prime is 61673511701. The reversal of 61673511679 is 97611537616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61673511679 - 2¹⁷ = 61673380607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61673511673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64109199 + ... + 64110160.

It is an arithmetic number, because the mean of its divisors is an integer number (8526587440).

Almost surely, 2^61673511679 is an apocalyptic number.

61673511679 is a deficient number, since it is larger than the sum of its proper divisors (6539187841).

61673511679 is a wasteful number, since it uses less digits than its factorization.

61673511679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128219409.

The product of its digits is 1428840, while the sum is 52.

The spelling of 61673511679 in words is "sixty-one billion, six hundred seventy-three million, five hundred eleven thousand, six hundred seventy-nine".