10393878738978 has 64 divisors (see below), whose sum is σ = 27110588939520. Its totient is φ = 2889418023936.

The previous prime is 10393878738953. The next prime is 10393878739007. The reversal of 10393878738978 is 87983787839301.

10393878738978 is a `hidden beast` number, since 1 + 0 + 3 + 93 + 8 + 7 + 87 + 389 + 78 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10393878738897 and 10393878738906.

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, 371567551 + ... + 371595522.

It is an arithmetic number, because the mean of its divisors is an integer number (423602952180).

Almost surely, 2^{10393878738978} is an apocalyptic number.

10393878738978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

10393878738978 is an abundant number, since it is smaller than the sum of its proper divisors (16716710200542).

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

10393878738978 is a wasteful number, since it uses less digits than its factorization.

10393878738978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743163128 (or 743163122 counting only the distinct ones).

The product of its (nonzero) digits is 3072577536, while the sum is 81.

The spelling of 10393878738978 in words is "ten trillion, three hundred ninety-three billion, eight hundred seventy-eight million, seven hundred thirty-eight thousand, nine hundred seventy-eight".