78285745797 has 16 divisors (see below), whose sum is σ = 119298391680. Its totient is φ = 44732526912.

The previous prime is 78285745781. The next prime is 78285745799. The reversal of 78285745797 is 79754758287.

It is not a de Polignac number, because 78285745797 - 2⁴ = 78285745781 is a prime.

It is a super-2 number, since 2×78285745797² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78285745799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 414403 + ... + 572975.

It is an arithmetic number, because the mean of its divisors is an integer number (7456149480).

Almost surely, 2^78285745797 is an apocalyptic number.

It is an amenable number.

78285745797 is a deficient number, since it is larger than the sum of its proper divisors (41012645883).

78285745797 is a wasteful number, since it uses less digits than its factorization.

78285745797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182092.

The product of its digits is 276595200, while the sum is 69.

The spelling of 78285745797 in words is "seventy-eight billion, two hundred eighty-five million, seven hundred forty-five thousand, seven hundred ninety-seven".