3752947609645 has 8 divisors (see below), whose sum is σ = 4849963064856. Its totient is φ = 2771407465536.

The previous prime is 3752947609639. The next prime is 3752947609679. The reversal of 3752947609645 is 5469067492573.

It can be written as a sum of positive squares in 4 ways, for example, as 20582493156 + 3732365116489 = 143466^2 + 1931933^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3752947609645 is a prime.

It is a super-3 number, since 3×3752947609645³ (a number of 39 digits) contains 333 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 (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28868827702 + ... + 28868827831.

It is an arithmetic number, because the mean of its divisors is an integer number (606245383107).

Almost surely, 2^{3752947609645} is an apocalyptic number.

It is an amenable number.

3752947609645 is a deficient number, since it is larger than the sum of its proper divisors (1097015455211).

3752947609645 is a wasteful number, since it uses less digits than its factorization.

3752947609645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57737655551.

The product of its (nonzero) digits is 342921600, while the sum is 67.

The spelling of 3752947609645 in words is "three trillion, seven hundred fifty-two billion, nine hundred forty-seven million, six hundred nine thousand, six hundred forty-five".