3978224129056 has 24 divisors (see below), whose sum is σ = 7832202686784. Its totient is φ = 1989093288000.

The previous prime is 3978224129053. The next prime is 3978224129093. The reversal of 3978224129056 is 6509214228793.

It is a super-2 number, since 2×3978224129056² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3978224129053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3240141 + ... + 4295923.

It is an arithmetic number, because the mean of its divisors is an integer number (326341778616).

It is a 1-persistent number, because it is pandigital, but 2⋅3978224129056 = 7956448258112 is not.

Almost surely, 2^{3978224129056} is an apocalyptic number.

It is an amenable number.

3978224129056 is a deficient number, since it is larger than the sum of its proper divisors (3853978557728).

3978224129056 is a wasteful number, since it uses less digits than its factorization.

3978224129056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173544 (or 1173536 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 58.

The spelling of 3978224129056 in words is "three trillion, nine hundred seventy-eight billion, two hundred twenty-four million, one hundred twenty-nine thousand, fifty-six".