678192920951 has 64 divisors (see below), whose sum is σ = 877346684928. Its totient is φ = 509530082688.

The previous prime is 678192920917. The next prime is 678192920981. The reversal of 678192920951 is 159029291876.

It is not a de Polignac number, because 678192920951 - 2³⁴ = 661013051767 is a prime.

It is a super-4 number, since 4×678192920951⁴ (a number of 48 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678192920981) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 181965650 + ... + 181969376.

It is an arithmetic number, because the mean of its divisors is an integer number (13708541952).

Almost surely, 2^678192920951 is an apocalyptic number.

678192920951 is a deficient number, since it is larger than the sum of its proper divisors (199153763977).

678192920951 is a wasteful number, since it uses less digits than its factorization.

678192920951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4380.

The product of its (nonzero) digits is 4898880, while the sum is 59.

The spelling of 678192920951 in words is "six hundred seventy-eight billion, one hundred ninety-two million, nine hundred twenty thousand, nine hundred fifty-one".