678951111790 has 32 divisors (see below), whose sum is σ = 1396814745024. Its totient is φ = 232764019200.

The previous prime is 678951111767. The next prime is 678951111799. The reversal of 678951111790 is 97111159876.

678951111790 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×678951111790⁴ (a number of 48 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678951111799) 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, 466822 + ... + 1255318.

It is an arithmetic number, because the mean of its divisors is an integer number (43650460782).

Almost surely, 2^678951111790 is an apocalyptic number.

678951111790 is an abundant number, since it is smaller than the sum of its proper divisors (717863633234).

678951111790 is a wasteful number, since it uses less digits than its factorization.

678951111790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800812.

The product of its (nonzero) digits is 952560, while the sum is 55.

The spelling of 678951111790 in words is "six hundred seventy-eight billion, nine hundred fifty-one million, one hundred eleven thousand, seven hundred ninety".