73536880121 has 2 divisors, whose sum is σ = 73536880122. Its totient is φ = 73536880120.

The previous prime is 73536880103. The next prime is 73536880187. The reversal of 73536880121 is 12108863537.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70894920121 + 2641960000 = 266261^2 + 51400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73536880121 is a prime.

It is not a weakly prime, because it can be changed into another prime (73536880421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36768440060 + 36768440061.

It is an arithmetic number, because the mean of its divisors is an integer number (36768440061).

Almost surely, 2^73536880121 is an apocalyptic number.

It is an amenable number.

73536880121 is a deficient number, since it is larger than the sum of its proper divisors (1).

73536880121 is an equidigital number, since it uses as much as digits as its factorization.

73536880121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 73536880121 in words is "seventy-three billion, five hundred thirty-six million, eight hundred eighty thousand, one hundred twenty-one".