73073612357 has 4 divisors (see below), whose sum is σ = 73086346476. Its totient is φ = 73060878240.

The previous prime is 73073612327. The next prime is 73073612369. The reversal of 73073612357 is 75321637037.

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 25884304996 + 47189307361 = 160886^2 + 217231^2 .

It is a cyclic number.

It is not a de Polignac number, because 73073612357 - 2³⁴ = 55893743173 is a prime.

It is a super-2 number, since 2×73073612357² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73073612327) 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, 6358448 + ... + 6369929.

It is an arithmetic number, because the mean of its divisors is an integer number (18271586619).

Almost surely, 2^73073612357 is an apocalyptic number.

It is an amenable number.

73073612357 is a deficient number, since it is larger than the sum of its proper divisors (12734119).

73073612357 is a wasteful number, since it uses less digits than its factorization.

73073612357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12734118.

The product of its (nonzero) digits is 555660, while the sum is 44.

The spelling of 73073612357 in words is "seventy-three billion, seventy-three million, six hundred twelve thousand, three hundred fifty-seven".