3145721439380 has 24 divisors (see below), whose sum is σ = 7114170025032. Its totient is φ = 1161497146752.

The previous prime is 3145721439359. The next prime is 3145721439401. The reversal of 3145721439380 is 839341275413.

It is an interprime number because it is at equal distance from previous prime (3145721439359) and next prime (3145721439401).

It can be written as a sum of positive squares in 4 ways, for example, as 240135281296 + 2905586158084 = 490036^2 + 1704578^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6049464047 + ... + 6049464566.

It is an arithmetic number, because the mean of its divisors is an integer number (296423751043).

Almost surely, 2^{3145721439380} is an apocalyptic number.

It is an amenable number.

3145721439380 is an abundant number, since it is smaller than the sum of its proper divisors (3968448585652).

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

3145721439380 is a wasteful number, since it uses less digits than its factorization.

3145721439380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12098928635 (or 12098928633 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 3145721439380 in words is "three trillion, one hundred forty-five billion, seven hundred twenty-one million, four hundred thirty-nine thousand, three hundred eighty".