3997144760920 has 32 divisors (see below), whose sum is σ = 8993772824400. Its totient is φ = 1598822862208.

The previous prime is 3997144760911. The next prime is 3997144760929. The reversal of 3997144760920 is 290674417993.

It is an interprime number because it is at equal distance from previous prime (3997144760911) and next prime (3997144760929).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3997144760929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 793002 + ... + 2936518.

Almost surely, 2^{3997144760920} is an apocalyptic number.

It is an amenable number.

3997144760920 is an abundant number, since it is smaller than the sum of its proper divisors (4996628063480).

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

3997144760920 is a wasteful number, since it uses less digits than its factorization.

3997144760920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2190147 (or 2190143 counting only the distinct ones).

The product of its (nonzero) digits is 20575296, while the sum is 61.

The spelling of 3997144760920 in words is "three trillion, nine hundred ninety-seven billion, one hundred forty-four million, seven hundred sixty thousand, nine hundred twenty".