3744620547545 has 4 divisors (see below), whose sum is σ = 4493544657060. Its totient is φ = 2995696438032.

The previous prime is 3744620547517. The next prime is 3744620547553. The reversal of 3744620547545 is 5457450264473.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2019172792576 + 1725447754969 = 1420976^2 + 1313563^2 .

It is a cyclic number.

It is not a de Polignac number, because 3744620547545 - 2⁸ = 3744620547289 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 374462054750 + ... + 374462054759.

It is an arithmetic number, because the mean of its divisors is an integer number (1123386164265).

Almost surely, 2^{3744620547545} is an apocalyptic number.

It is an amenable number.

3744620547545 is a deficient number, since it is larger than the sum of its proper divisors (748924109515).

3744620547545 is an equidigital number, since it uses as much as digits as its factorization.

3744620547545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748924109514.

The product of its (nonzero) digits is 56448000, while the sum is 56.

The spelling of 3744620547545 in words is "three trillion, seven hundred forty-four billion, six hundred twenty million, five hundred forty-seven thousand, five hundred forty-five".