73477747873 has 2 divisors, whose sum is σ = 73477747874. Its totient is φ = 73477747872.

The previous prime is 73477747867. The next prime is 73477747877. The reversal of 73477747873 is 37874777437.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71271379089 + 2206368784 = 266967^2 + 46972^2 .

It is a cyclic number.

It is not a de Polignac number, because 73477747873 - 2⁵ = 73477747841 is a prime.

It is not a weakly prime, because it can be changed into another prime (73477747877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36738873936 + 36738873937.

It is an arithmetic number, because the mean of its divisors is an integer number (36738873937).

Almost surely, 2^73477747873 is an apocalyptic number.

It is an amenable number.

73477747873 is a deficient number, since it is larger than the sum of its proper divisors (1).

73477747873 is an equidigital number, since it uses as much as digits as its factorization.

73477747873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 135531648, while the sum is 64.

The spelling of 73477747873 in words is "seventy-three billion, four hundred seventy-seven million, seven hundred forty-seven thousand, eight hundred seventy-three".