4256431305412 has 48 divisors (see below), whose sum is σ = 8837628174144. Its totient is φ = 1768232880000.

The previous prime is 4256431305319. The next prime is 4256431305419. The reversal of 4256431305412 is 2145031346524.

It is not an unprimeable number, because it can be changed into a prime (4256431305419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36780414 + ... + 36895957.

It is an arithmetic number, because the mean of its divisors is an integer number (184117253628).

Almost surely, 2^{4256431305412} is an apocalyptic number.

It is an amenable number.

4256431305412 is an abundant number, since it is smaller than the sum of its proper divisors (4581196868732).

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

4256431305412 is a wasteful number, since it uses less digits than its factorization.

4256431305412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73676500 (or 73676498 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 40.

The spelling of 4256431305412 in words is "four trillion, two hundred fifty-six billion, four hundred thirty-one million, three hundred five thousand, four hundred twelve".