78778465602 has 16 divisors (see below), whose sum is σ = 160909206912. Its totient is φ = 25700775920.

The previous prime is 78778465583. The next prime is 78778465621. The reversal of 78778465602 is 20656487787.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (78778465583) and next prime (78778465621).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139677849 + ... + 139678412.

It is an arithmetic number, because the mean of its divisors is an integer number (10056825432).

Almost surely, 2^78778465602 is an apocalyptic number.

78778465602 is an abundant number, since it is smaller than the sum of its proper divisors (82130741310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78778465602 is a wasteful number, since it uses less digits than its factorization.

78778465602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279356313.

The product of its (nonzero) digits is 31610880, while the sum is 60.

The spelling of 78778465602 in words is "seventy-eight billion, seven hundred seventy-eight million, four hundred sixty-five thousand, six hundred two".