78821725023364 has 36 divisors (see below), whose sum is σ = 138861806436864. Its totient is φ = 39147605814000.

The previous prime is 78821725023341. The next prime is 78821725023439. The reversal of 78821725023364 is 46332052712887.

It is a junction number, because it is equal to n+sod(n) for n = 78821725023299 and 78821725023308.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 364687449 + ... + 364903519.

It is an arithmetic number, because the mean of its divisors is an integer number (3857272401024).

Almost surely, 2^{78821725023364} is an apocalyptic number.

It is an amenable number.

78821725023364 is a deficient number, since it is larger than the sum of its proper divisors (60040081413500).

78821725023364 is a wasteful number, since it uses less digits than its factorization.

78821725023364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217648 (or 216955 counting only the distinct ones).

The product of its (nonzero) digits is 27095040, while the sum is 58.

The spelling of 78821725023364 in words is "seventy-eight trillion, eight hundred twenty-one billion, seven hundred twenty-five million, twenty-three thousand, three hundred sixty-four".