78356882597 has 12 divisors (see below), whose sum is σ = 91547890380. Its totient is φ = 66869744256.

The previous prime is 78356882551. The next prime is 78356882603. The reversal of 78356882597 is 79528865387.

It can be written as a sum of positive squares in 2 ways, for example, as 57961044001 + 20395838596 = 240751^2 + 142814^2 .

It is not a de Polignac number, because 78356882597 - 2⁶ = 78356882533 is a prime.

It is a super-2 number, since 2×78356882597² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78356882537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3480308 + ... + 3502749.

It is an arithmetic number, because the mean of its divisors is an integer number (7628990865).

Almost surely, 2^78356882597 is an apocalyptic number.

It is an amenable number.

78356882597 is a deficient number, since it is larger than the sum of its proper divisors (13191007783).

78356882597 is a wasteful number, since it uses less digits than its factorization.

78356882597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6983300 (or 6983293 counting only the distinct ones).

The product of its digits is 203212800, while the sum is 68.

The spelling of 78356882597 in words is "seventy-eight billion, three hundred fifty-six million, eight hundred eighty-two thousand, five hundred ninety-seven".