78361506618482 has 4 divisors (see below), whose sum is σ = 117542259927726. Its totient is φ = 39180753309240.

The previous prime is 78361506618469. The next prime is 78361506618503. The reversal of 78361506618482 is 28481660516387.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 54628640072161 + 23732866546321 = 7391119^2 + 4871639^2 .

It is a super-2 number, since 2×78361506618482² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19590376654619 + ... + 19590376654622.

Almost surely, 2^{78361506618482} is an apocalyptic number.

78361506618482 is a deficient number, since it is larger than the sum of its proper divisors (39180753309244).

78361506618482 is a wasteful number, since it uses less digits than its factorization.

78361506618482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39180753309243.

The product of its (nonzero) digits is 92897280, while the sum is 65.

The spelling of 78361506618482 in words is "seventy-eight trillion, three hundred sixty-one billion, five hundred six million, six hundred eighteen thousand, four hundred eighty-two".