73557875393 has 2 divisors, whose sum is σ = 73557875394. Its totient is φ = 73557875392.

The previous prime is 73557875383. The next prime is 73557875401. The reversal of 73557875393 is 39357875537.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37561540864 + 35996334529 = 193808^2 + 189727^2 .

It is an emirp because it is prime and its reverse (39357875537) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73557875393 - 2¹² = 73557871297 is a prime.

It is a super-2 number, since 2×73557875393² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73557875383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36778937696 + 36778937697.

It is an arithmetic number, because the mean of its divisors is an integer number (36778937697).

Almost surely, 2^73557875393 is an apocalyptic number.

It is an amenable number.

73557875393 is a deficient number, since it is larger than the sum of its proper divisors (1).

73557875393 is an equidigital number, since it uses as much as digits as its factorization.

73557875393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 83349000, while the sum is 62.

The spelling of 73557875393 in words is "seventy-three billion, five hundred fifty-seven million, eight hundred seventy-five thousand, three hundred ninety-three".