73547474537 has 2 divisors, whose sum is σ = 73547474538. Its totient is φ = 73547474536.

The previous prime is 73547474489. The next prime is 73547474543.

73547474537 is nontrivially palindromic in base 10.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40650221161 + 32897253376 = 201619^2 + 181376^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 73547474537 - 2³⁰ = 72473732713 is a prime.

It is not a weakly prime, because it can be changed into another prime (73547474597) 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, 36773737268 + 36773737269.

It is an arithmetic number, because the mean of its divisors is an integer number (36773737269).

Almost surely, 2^73547474537 is an apocalyptic number.

It is an amenable number.

73547474537 is a deficient number, since it is larger than the sum of its proper divisors (1).

73547474537 is an equidigital number, since it uses as much as digits as its factorization.

73547474537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34574400, while the sum is 56.

The spelling of 73547474537 in words is "seventy-three billion, five hundred forty-seven million, four hundred seventy-four thousand, five hundred thirty-seven".