73405551313 has 2 divisors, whose sum is σ = 73405551314. Its totient is φ = 73405551312.

The previous prime is 73405551293. The next prime is 73405551347. The reversal of 73405551313 is 31315550437.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67895161489 + 5510389824 = 260567^2 + 74232^2 .

It is a cyclic number.

It is not a de Polignac number, because 73405551313 - 2¹³ = 73405543121 is a prime.

It is not a weakly prime, because it can be changed into another prime (73405551383) 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, 36702775656 + 36702775657.

It is an arithmetic number, because the mean of its divisors is an integer number (36702775657).

Almost surely, 2^73405551313 is an apocalyptic number.

It is an amenable number.

73405551313 is a deficient number, since it is larger than the sum of its proper divisors (1).

73405551313 is an equidigital number, since it uses as much as digits as its factorization.

73405551313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94500, while the sum is 37.

The spelling of 73405551313 in words is "seventy-three billion, four hundred five million, five hundred fifty-one thousand, three hundred thirteen".