78285745708 has 12 divisors (see below), whose sum is σ = 139914950112. Its totient is φ = 38310045680.

The previous prime is 78285745687. The next prime is 78285745723. The reversal of 78285745708 is 80754758287.

It is a happy number.

It is a super-2 number, since 2×78285745708² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 208206583 + ... + 208206958.

It is an arithmetic number, because the mean of its divisors is an integer number (11659579176).

Almost surely, 2^78285745708 is an apocalyptic number.

It is an amenable number.

78285745708 is a deficient number, since it is larger than the sum of its proper divisors (61629204404).

78285745708 is a wasteful number, since it uses less digits than its factorization.

78285745708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416413592 (or 416413590 counting only the distinct ones).

The product of its (nonzero) digits is 35123200, while the sum is 61.

The spelling of 78285745708 in words is "seventy-eight billion, two hundred eighty-five million, seven hundred forty-five thousand, seven hundred eight".