78308321476 has 48 divisors (see below), whose sum is σ = 179846876160. Its totient is φ = 28903957920.

The previous prime is 78308321459. The next prime is 78308321479. The reversal of 78308321476 is 67412380387.

It is a happy number.

It is a super-2 number, since 2×78308321476² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78308321479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6684880 + ... + 6696583.

It is an arithmetic number, because the mean of its divisors is an integer number (3746809920).

Almost surely, 2^78308321476 is an apocalyptic number.

78308321476 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

78308321476 is an abundant number, since it is smaller than the sum of its proper divisors (101538554684).

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

78308321476 is a wasteful number, since it uses less digits than its factorization.

78308321476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13381504 (or 13381502 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 49.

The spelling of 78308321476 in words is "seventy-eight billion, three hundred eight million, three hundred twenty-one thousand, four hundred seventy-six".