73149972801 has 4 divisors (see below), whose sum is σ = 97533297072. Its totient is φ = 48766648532.

The previous prime is 73149972793. The next prime is 73149972803. The reversal of 73149972801 is 10827994137.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10827994137 = 3 ⋅3609331379.

It is a cyclic number.

It is not a de Polignac number, because 73149972801 - 2³ = 73149972793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73149972803) 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, 12191662131 + ... + 12191662136.

It is an arithmetic number, because the mean of its divisors is an integer number (24383324268).

Almost surely, 2^73149972801 is an apocalyptic number.

It is an amenable number.

73149972801 is a deficient number, since it is larger than the sum of its proper divisors (24383324271).

73149972801 is a wasteful number, since it uses less digits than its factorization.

73149972801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24383324270.

The product of its (nonzero) digits is 762048, while the sum is 51.

The spelling of 73149972801 in words is "seventy-three billion, one hundred forty-nine million, nine hundred seventy-two thousand, eight hundred one".