73397968033 has 4 divisors (see below), whose sum is σ = 79043965588. Its totient is φ = 67751970480.

The previous prime is 73397968001. The next prime is 73397968043. The reversal of 73397968033 is 33086979337.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50040347809 + 23357620224 = 223697^2 + 152832^2 .

It is a cyclic number.

It is not a de Polignac number, because 73397968033 - 2⁵ = 73397968001 is a prime.

It is a super-2 number, since 2×73397968033² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73397968043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2822998758 + ... + 2822998783.

It is an arithmetic number, because the mean of its divisors is an integer number (19760991397).

Almost surely, 2^73397968033 is an apocalyptic number.

It is an amenable number.

73397968033 is a deficient number, since it is larger than the sum of its proper divisors (5645997555).

73397968033 is a wasteful number, since it uses less digits than its factorization.

73397968033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5645997554.

The product of its (nonzero) digits is 15431472, while the sum is 58.

The spelling of 73397968033 in words is "seventy-three billion, three hundred ninety-seven million, nine hundred sixty-eight thousand, thirty-three".