78300490855 has 4 divisors (see below), whose sum is σ = 93960589032. Its totient is φ = 62640392680.

The previous prime is 78300490813. The next prime is 78300490861. The reversal of 78300490855 is 55809400387.

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

It is not a de Polignac number, because 78300490855 - 2¹⁹ = 78299966567 is a prime.

It is a super-2 number, since 2×78300490855² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78300490799 and 78300490808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7830049081 + ... + 7830049090.

It is an arithmetic number, because the mean of its divisors is an integer number (23490147258).

Almost surely, 2^78300490855 is an apocalyptic number.

78300490855 is a deficient number, since it is larger than the sum of its proper divisors (15660098177).

78300490855 is a wasteful number, since it uses less digits than its factorization.

78300490855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15660098176.

The product of its (nonzero) digits is 1209600, while the sum is 49.

The spelling of 78300490855 in words is "seventy-eight billion, three hundred million, four hundred ninety thousand, eight hundred fifty-five".