73037538109 has 2 divisors, whose sum is σ = 73037538110. Its totient is φ = 73037538108.

The previous prime is 73037538083. The next prime is 73037538241. The reversal of 73037538109 is 90183573037.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57781582884 + 15255955225 = 240378^2 + 123515^2 .

It is a cyclic number.

It is not a de Polignac number, because 73037538109 - 2²¹ = 73035440957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73037538709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36518769054 + 36518769055.

It is an arithmetic number, because the mean of its divisors is an integer number (36518769055).

Almost surely, 2^73037538109 is an apocalyptic number.

It is an amenable number.

73037538109 is a deficient number, since it is larger than the sum of its proper divisors (1).

73037538109 is an equidigital number, since it uses as much as digits as its factorization.

73037538109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 476280, while the sum is 46.

The spelling of 73037538109 in words is "seventy-three billion, thirty-seven million, five hundred thirty-eight thousand, one hundred nine".