78642928573 has 16 divisors (see below), whose sum is σ = 87477739776. Its totient is φ = 70091087040.

The previous prime is 78642928547. The next prime is 78642928597. The reversal of 78642928573 is 37582924687.

It is a cyclic number.

It is not a de Polignac number, because 78642928573 - 2¹⁷ = 78642797501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78642928873) 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, 722815 + ... + 824467.

It is an arithmetic number, because the mean of its divisors is an integer number (5467358736).

Almost surely, 2^78642928573 is an apocalyptic number.

It is an amenable number.

78642928573 is a deficient number, since it is larger than the sum of its proper divisors (8834811203).

78642928573 is a wasteful number, since it uses less digits than its factorization.

78642928573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103044.

The product of its digits is 40642560, while the sum is 61.

The spelling of 78642928573 in words is "seventy-eight billion, six hundred forty-two million, nine hundred twenty-eight thousand, five hundred seventy-three".