78300490854 has 32 divisors (see below), whose sum is σ = 170527392000. Its totient is φ = 23873832864.

The previous prime is 78300490813. The next prime is 78300490861. The reversal of 78300490854 is 45809400387.

It is a super-2 number, since 2×78300490854² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 11838874 + ... + 11845485.

It is an arithmetic number, because the mean of its divisors is an integer number (5328981000).

Almost surely, 2^78300490854 is an apocalyptic number.

78300490854 is an abundant number, since it is smaller than the sum of its proper divisors (92226901146).

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

78300490854 is a wasteful number, since it uses less digits than its factorization.

78300490854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23684412.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 78300490854 in words is "seventy-eight billion, three hundred million, four hundred ninety thousand, eight hundred fifty-four".