74966201813 has 2 divisors, whose sum is σ = 74966201814. Its totient is φ = 74966201812.

The previous prime is 74966201803. The next prime is 74966201879. The reversal of 74966201813 is 31810266947.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59544784324 + 15421417489 = 244018^2 + 124183^2 .

It is an emirp because it is prime and its reverse (31810266947) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74966201813 - 2³⁰ = 73892459989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74966201803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37483100906 + 37483100907.

It is an arithmetic number, because the mean of its divisors is an integer number (37483100907).

Almost surely, 2^74966201813 is an apocalyptic number.

It is an amenable number.

74966201813 is a deficient number, since it is larger than the sum of its proper divisors (1).

74966201813 is an equidigital number, since it uses as much as digits as its factorization.

74966201813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 74966201813 in words is "seventy-four billion, nine hundred sixty-six million, two hundred one thousand, eight hundred thirteen".