3744969781572 has 144 divisors (see below), whose sum is σ = 9593131591680. Its totient is φ = 1231737808896.

The previous prime is 3744969781571. The next prime is 3744969781573. The reversal of 3744969781572 is 2751879694473.

3744969781572 is a `hidden beast` number, since 3 + 7 + 4 + 49 + 6 + 9 + 7 + 8 + 1 + 572 = 666.

It is an interprime number because it is at equal distance from previous prime (3744969781571) and next prime (3744969781573).

It is a self number, because there is not a number n which added to its sum of digits gives 3744969781572.

It is not an unprimeable number, because it can be changed into a prime (3744969781571) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1856701908 + ... + 1856703924.

Almost surely, 2^{3744969781572} is an apocalyptic number.

It is an amenable number.

3744969781572 is an abundant number, since it is smaller than the sum of its proper divisors (5848161810108).

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

3744969781572 is a wasteful number, since it uses less digits than its factorization.

3744969781572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4170 (or 4165 counting only the distinct ones).

The product of its digits is 640120320, while the sum is 72.

The spelling of 3744969781572 in words is "three trillion, seven hundred forty-four billion, nine hundred sixty-nine million, seven hundred eighty-one thousand, five hundred seventy-two".