678715542400 has 144 divisors (see below), whose sum is σ = 1950376998240. Its totient is φ = 232702417920.

The previous prime is 678715542397. The next prime is 678715542403. The reversal of 678715542400 is 4245517876.

It is an interprime number because it is at equal distance from previous prime (678715542397) and next prime (678715542403).

It is a super-3 number, since 3×678715542400³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678715542403) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2007472 + ... + 2321071.

It is an arithmetic number, because the mean of its divisors is an integer number (13544284710).

Almost surely, 2^678715542400 is an apocalyptic number.

It is an amenable number.

678715542400 is an abundant number, since it is smaller than the sum of its proper divisors (1271661455840).

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

678715542400 is a wasteful number, since it uses less digits than its factorization.

678715542400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4328581 (or 4328557 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 49.

The spelling of 678715542400 in words is "six hundred seventy-eight billion, seven hundred fifteen million, five hundred forty-two thousand, four hundred".