78722885523 has 8 divisors (see below), whose sum is σ = 105014734848. Its totient is φ = 52456479944.

The previous prime is 78722885503. The next prime is 78722885531. The reversal of 78722885523 is 32558822787.

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 78722885523 - 2²⁹ = 78186014611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78722885503) 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, 6353715 + ... + 6366092.

It is an arithmetic number, because the mean of its divisors is an integer number (13126841856).

Almost surely, 2^78722885523 is an apocalyptic number.

78722885523 is a deficient number, since it is larger than the sum of its proper divisors (26291849325).

78722885523 is a wasteful number, since it uses less digits than its factorization.

78722885523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12721873.

The product of its digits is 15052800, while the sum is 57.

The spelling of 78722885523 in words is "seventy-eight billion, seven hundred twenty-two million, eight hundred eighty-five thousand, five hundred twenty-three".