78285699082 has 8 divisors (see below), whose sum is σ = 118176501636. Its totient is φ = 38893531872.

The previous prime is 78285699077. The next prime is 78285699083. The reversal of 78285699082 is 28099658287.

It can be written as a sum of positive squares in 2 ways, for example, as 73864911961 + 4420787121 = 271781^2 + 66489^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78285699082² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78285699083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124658443 + ... + 124659070.

Almost surely, 2^78285699082 is an apocalyptic number.

78285699082 is a deficient number, since it is larger than the sum of its proper divisors (39890802554).

78285699082 is a wasteful number, since it uses less digits than its factorization.

78285699082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249317672.

The product of its (nonzero) digits is 34836480, while the sum is 64.

The spelling of 78285699082 in words is "seventy-eight billion, two hundred eighty-five million, six hundred ninety-nine thousand, eighty-two".