73964315573 has 2 divisors, whose sum is σ = 73964315574. Its totient is φ = 73964315572.

The previous prime is 73964315507. The next prime is 73964315591. The reversal of 73964315573 is 37551346937.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72567200689 + 1397114884 = 269383^2 + 37378^2 .

It is a cyclic number.

It is not a de Polignac number, because 73964315573 - 2²⁰ = 73963266997 is a prime.

It is a super-3 number, since 3×73964315573³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73960315573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36982157786 + 36982157787.

It is an arithmetic number, because the mean of its divisors is an integer number (36982157787).

Almost surely, 2^73964315573 is an apocalyptic number.

It is an amenable number.

73964315573 is a deficient number, since it is larger than the sum of its proper divisors (1).

73964315573 is an equidigital number, since it uses as much as digits as its factorization.

73964315573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7144200, while the sum is 53.

The spelling of 73964315573 in words is "seventy-three billion, nine hundred sixty-four million, three hundred fifteen thousand, five hundred seventy-three".