73150478497 has 4 divisors (see below), whose sum is σ = 75672908820. Its totient is φ = 70628048176.

The previous prime is 73150478449. The next prime is 73150478519. The reversal of 73150478497 is 79487405137.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79487405137 = 7 ⋅11355343591.

It can be written as a sum of positive squares in 2 ways, for example, as 29906860096 + 43243618401 = 172936^2 + 207951^2 .

It is a cyclic number.

It is not a de Polignac number, because 73150478497 - 2¹¹ = 73150476449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73150478897) 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, 1261215118 + ... + 1261215175.

It is an arithmetic number, because the mean of its divisors is an integer number (18918227205).

Almost surely, 2^73150478497 is an apocalyptic number.

It is an amenable number.

73150478497 is a deficient number, since it is larger than the sum of its proper divisors (2522430323).

73150478497 is a wasteful number, since it uses less digits than its factorization.

73150478497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2522430322.

The product of its (nonzero) digits is 5927040, while the sum is 55.

The spelling of 73150478497 in words is "seventy-three billion, one hundred fifty million, four hundred seventy-eight thousand, four hundred ninety-seven".