78278882758680 has 128 divisors (see below), whose sum is σ = 252951677521920. Its totient is φ = 19322697546240.

The previous prime is 78278882758633. The next prime is 78278882758693. The reversal of 78278882758680 is 8685728887287.

It is a super-2 number, since 2×78278882758680² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78278882758593 and 78278882758602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 457364667 + ... + 457535786.

It is an arithmetic number, because the mean of its divisors is an integer number (1976184980640).

Almost surely, 2^{78278882758680} is an apocalyptic number.

It is an amenable number.

78278882758680 is an abundant number, since it is smaller than the sum of its proper divisors (174672794763240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78278882758680 is a wasteful number, since it uses less digits than its factorization.

78278882758680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914900521 (or 914900517 counting only the distinct ones).

The product of its (nonzero) digits is 10789847040, while the sum is 84.

The spelling of 78278882758680 in words is "seventy-eight trillion, two hundred seventy-eight billion, eight hundred eighty-two million, seven hundred fifty-eight thousand, six hundred eighty".