678419400432 has 20 divisors (see below), whose sum is σ = 1752583451240. Its totient is φ = 226139800128.

The previous prime is 678419400409. The next prime is 678419400487. The reversal of 678419400432 is 234004914876.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 14133737509 = 678419400432 / (6 + 7 + 8 + 4 + 1 + 9 + 4 + 0 + 0 + 4 + 3 + 2).

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, 7066868707 + ... + 7066868802.

It is an arithmetic number, because the mean of its divisors is an integer number (87629172562).

Almost surely, 2^678419400432 is an apocalyptic number.

It is an amenable number.

678419400432 is an abundant number, since it is smaller than the sum of its proper divisors (1074164050808).

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

678419400432 is a wasteful number, since it uses less digits than its factorization.

678419400432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14133737520 (or 14133737514 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 678419400432 in words is "six hundred seventy-eight billion, four hundred nineteen million, four hundred thousand, four hundred thirty-two".