73451615399 has 2 divisors, whose sum is σ = 73451615400. Its totient is φ = 73451615398.

The previous prime is 73451615381. The next prime is 73451615459. The reversal of 73451615399 is 99351615437.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73451615399 - 2²⁰ = 73450566823 is a prime.

It is a super-2 number, since 2×73451615399² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 73451615399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73451615099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36725807699 + 36725807700.

It is an arithmetic number, because the mean of its divisors is an integer number (36725807700).

Almost surely, 2^73451615399 is an apocalyptic number.

73451615399 is a deficient number, since it is larger than the sum of its proper divisors (1).

73451615399 is an equidigital number, since it uses as much as digits as its factorization.

73451615399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3061800, while the sum is 53.

The spelling of 73451615399 in words is "seventy-three billion, four hundred fifty-one million, six hundred fifteen thousand, three hundred ninety-nine".