73498397729 has 4 divisors (see below), whose sum is σ = 73501137840. Its totient is φ = 73495657620.

The previous prime is 73498397681. The next prime is 73498397773. The reversal of 73498397729 is 92779389437.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 73498397729 - 2⁸ = 73498397473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73498397779) 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, 1329419 + ... + 1383600.

It is an arithmetic number, because the mean of its divisors is an integer number (18375284460).

Almost surely, 2^73498397729 is an apocalyptic number.

It is an amenable number.

73498397729 is a deficient number, since it is larger than the sum of its proper divisors (2740111).

73498397729 is a wasteful number, since it uses less digits than its factorization.

73498397729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2740110.

The product of its digits is 144027072, while the sum is 68.

The spelling of 73498397729 in words is "seventy-three billion, four hundred ninety-eight million, three hundred ninety-seven thousand, seven hundred twenty-nine".