73546864537 has 2 divisors, whose sum is σ = 73546864538. Its totient is φ = 73546864536.

The previous prime is 73546864513. The next prime is 73546864577.

73546864537 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65833809561 + 7713054976 = 256581^2 + 87824^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 73546864537 - 2²⁷ = 73412646809 is a prime.

It is not a weakly prime, because it can be changed into another prime (73546864577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36773432268 + 36773432269.

It is an arithmetic number, because the mean of its divisors is an integer number (36773432269).

Almost surely, 2^73546864537 is an apocalyptic number.

It is an amenable number.

73546864537 is a deficient number, since it is larger than the sum of its proper divisors (1).

73546864537 is an equidigital number, since it uses as much as digits as its factorization.

73546864537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50803200, while the sum is 58.

The spelling of 73546864537 in words is "seventy-three billion, five hundred forty-six million, eight hundred sixty-four thousand, five hundred thirty-seven".