74758203545 has 24 divisors (see below), whose sum is σ = 95339289624. Its totient is φ = 56263735296.

The previous prime is 74758203521. The next prime is 74758203551. The reversal of 74758203545 is 54530285747.

It can be written as a sum of positive squares in 12 ways, for example, as 2747017744 + 72011185801 = 52412^2 + 268349^2 .

It is not a de Polignac number, because 74758203545 - 2²⁴ = 74741426329 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74758203493 and 74758203502.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3684749 + ... + 3704981.

It is an arithmetic number, because the mean of its divisors is an integer number (3972470401).

Almost surely, 2^74758203545 is an apocalyptic number.

It is an amenable number.

74758203545 is a deficient number, since it is larger than the sum of its proper divisors (20581086079).

74758203545 is a wasteful number, since it uses less digits than its factorization.

74758203545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22829 (or 22812 counting only the distinct ones).

The product of its (nonzero) digits is 4704000, while the sum is 50.

The spelling of 74758203545 in words is "seventy-four billion, seven hundred fifty-eight million, two hundred three thousand, five hundred forty-five".