78555305983 has 32 divisors (see below), whose sum is σ = 102349209600. Its totient is φ = 58516184160.

The previous prime is 78555305977. The next prime is 78555306013. The reversal of 78555305983 is 38950355587.

It is a happy number.

It is not a de Polignac number, because 78555305983 - 2⁹ = 78555305471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78555305923) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96783 + ... + 408016.

It is an arithmetic number, because the mean of its divisors is an integer number (3198412800).

Almost surely, 2^78555305983 is an apocalyptic number.

78555305983 is a deficient number, since it is larger than the sum of its proper divisors (23793903617).

78555305983 is a wasteful number, since it uses less digits than its factorization.

78555305983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504907.

The product of its (nonzero) digits is 22680000, while the sum is 58.

The spelling of 78555305983 in words is "seventy-eight billion, five hundred fifty-five million, three hundred five thousand, nine hundred eighty-three".