678590611450 has 48 divisors (see below), whose sum is σ = 1273718851776. Its totient is φ = 268955859200.

The previous prime is 678590611399. The next prime is 678590611451. The reversal of 678590611450 is 54116095876.

It is a super-2 number, since 2×678590611450² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (678590611451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21810405 + ... + 21841495.

It is an arithmetic number, because the mean of its divisors is an integer number (26535809412).

Almost surely, 2^678590611450 is an apocalyptic number.

678590611450 is a deficient number, since it is larger than the sum of its proper divisors (595128240326).

678590611450 is a wasteful number, since it uses less digits than its factorization.

678590611450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35079 (or 35074 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 52.

The spelling of 678590611450 in words is "six hundred seventy-eight billion, five hundred ninety million, six hundred eleven thousand, four hundred fifty".