678198551041 has 16 divisors (see below), whose sum is σ = 744488259840. Its totient is φ = 612682373520.

The previous prime is 678198551033. The next prime is 678198551087. The reversal of 678198551041 is 140155891876.

It is a cyclic number.

It is not a de Polignac number, because 678198551041 - 2³ = 678198551033 is a prime.

It is a super-2 number, since 2×678198551041² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (678198551341) 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, 17227206 + ... + 17266528.

It is an arithmetic number, because the mean of its divisors is an integer number (46530516240).

Almost surely, 2^678198551041 is an apocalyptic number.

It is an amenable number.

678198551041 is a deficient number, since it is larger than the sum of its proper divisors (66289708799).

678198551041 is a wasteful number, since it uses less digits than its factorization.

678198551041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49116.

The product of its (nonzero) digits is 2419200, while the sum is 55.

The spelling of 678198551041 in words is "six hundred seventy-eight billion, one hundred ninety-eight million, five hundred fifty-one thousand, forty-one".