860455628978 has 32 divisors (see below), whose sum is σ = 1473048799488. Its totient is φ = 373458102400.

The previous prime is 860455628959. The next prime is 860455629001. The reversal of 860455628978 is 879826554068.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10105925 + ... + 10190712.

It is an arithmetic number, because the mean of its divisors is an integer number (46032774984).

Almost surely, 2^860455628978 is an apocalyptic number.

860455628978 is a deficient number, since it is larger than the sum of its proper divisors (612593170510).

860455628978 is a wasteful number, since it uses less digits than its factorization.

860455628978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20296738.

The product of its (nonzero) digits is 232243200, while the sum is 68.

The spelling of 860455628978 in words is "eight hundred sixty billion, four hundred fifty-five million, six hundred twenty-eight thousand, nine hundred seventy-eight".