78242511502573 has 32 divisors (see below), whose sum is σ = 86865139739520. Its totient is φ = 69874521696000.

The previous prime is 78242511502549. The next prime is 78242511502601. The reversal of 78242511502573 is 37520511524287.

It is a cyclic number.

It is not a de Polignac number, because 78242511502573 - 2¹⁷ = 78242511371501 is a prime.

It is a super-2 number, since 2×78242511502573² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78242511502573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78242511505573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1717441311 + ... + 1717486867.

It is an arithmetic number, because the mean of its divisors is an integer number (2714535616860).

Almost surely, 2^{78242511502573} is an apocalyptic number.

It is an amenable number.

78242511502573 is a deficient number, since it is larger than the sum of its proper divisors (8622628236947).

78242511502573 is a wasteful number, since it uses less digits than its factorization.

78242511502573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48829.

The product of its (nonzero) digits is 4704000, while the sum is 52.

The spelling of 78242511502573 in words is "seventy-eight trillion, two hundred forty-two billion, five hundred eleven million, five hundred two thousand, five hundred seventy-three".