74728714837 has 12 divisors (see below), whose sum is σ = 87028492620. Its totient is φ = 63980110656.

The previous prime is 74728714817. The next prime is 74728714843. The reversal of 74728714837 is 73841782747.

It can be written as a sum of positive squares in 2 ways, for example, as 39791871441 + 34936843396 = 199479^2 + 186914^2 .

It is not a de Polignac number, because 74728714837 - 2¹⁵ = 74728682069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74728714817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 826512 + ... + 912457.

It is an arithmetic number, because the mean of its divisors is an integer number (7252374385).

Almost surely, 2^74728714837 is an apocalyptic number.

It is an amenable number.

74728714837 is a deficient number, since it is larger than the sum of its proper divisors (12299777783).

74728714837 is a wasteful number, since it uses less digits than its factorization.

74728714837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739860 (or 1739853 counting only the distinct ones).

The product of its digits is 14751744, while the sum is 58.

The spelling of 74728714837 in words is "seventy-four billion, seven hundred twenty-eight million, seven hundred fourteen thousand, eight hundred thirty-seven".