72974259473 has 2 divisors, whose sum is σ = 72974259474. Its totient is φ = 72974259472.

The previous prime is 72974259451. The next prime is 72974259509. The reversal of 72974259473 is 37495247927.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60512556049 + 12461703424 = 245993^2 + 111632^2 .

It is an emirp because it is prime and its reverse (37495247927) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72974259473 - 2¹⁰ = 72974258449 is a prime.

It is not a weakly prime, because it can be changed into another prime (72974259773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36487129736 + 36487129737.

It is an arithmetic number, because the mean of its divisors is an integer number (36487129737).

Almost surely, 2^72974259473 is an apocalyptic number.

It is an amenable number.

72974259473 is a deficient number, since it is larger than the sum of its proper divisors (1).

72974259473 is an equidigital number, since it uses as much as digits as its factorization.

72974259473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26671680, while the sum is 59.

The spelling of 72974259473 in words is "seventy-two billion, nine hundred seventy-four million, two hundred fifty-nine thousand, four hundred seventy-three".