3731543746640 has 80 divisors (see below), whose sum is σ = 8689978805760. Its totient is φ = 1490186112000.

The previous prime is 3731543746631. The next prime is 3731543746703. The reversal of 3731543746640 is 466473451373.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×3731543746640² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264885677 + ... + 264899763.

It is an arithmetic number, because the mean of its divisors is an integer number (108624735072).

Almost surely, 2^{3731543746640} is an apocalyptic number.

It is an amenable number.

3731543746640 is an abundant number, since it is smaller than the sum of its proper divisors (4958435059120).

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

3731543746640 is a wasteful number, since it uses less digits than its factorization.

3731543746640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19260 (or 19254 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 53.

The spelling of 3731543746640 in words is "three trillion, seven hundred thirty-one billion, five hundred forty-three million, seven hundred forty-six thousand, six hundred forty".