78666501036730 has 16 divisors (see below), whose sum is σ = 141599871735840. Its totient is φ = 31466562665872.

The previous prime is 78666501036727. The next prime is 78666501036787. The reversal of 78666501036730 is 3763010566687.

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, 4984017 + ... + 13497163.

It is an arithmetic number, because the mean of its divisors is an integer number (8849991983490).

Almost surely, 2^{78666501036730} is an apocalyptic number.

78666501036730 is a deficient number, since it is larger than the sum of its proper divisors (62933370699110).

78666501036730 is a wasteful number, since it uses less digits than its factorization.

78666501036730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9437213.

The product of its (nonzero) digits is 22861440, while the sum is 58.

The spelling of 78666501036730 in words is "seventy-eight trillion, six hundred sixty-six billion, five hundred one million, thirty-six thousand, seven hundred thirty".