73139189759947 has 2 divisors, whose sum is σ = 73139189759948. Its totient is φ = 73139189759946.

The previous prime is 73139189759927. The next prime is 73139189760029. The reversal of 73139189759947 is 74995798193137.

It is an a-pointer prime, because the next prime (73139189760029) can be obtained adding 73139189759947 to its sum of digits (82).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73139189759947 - 2²⁷ = 73139055542219 is a prime.

It is a super-2 number, since 2×73139189759947² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73139189759927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36569594879973 + 36569594879974.

It is an arithmetic number, because the mean of its divisors is an integer number (36569594879974).

Almost surely, 2^{73139189759947} is an apocalyptic number.

73139189759947 is a deficient number, since it is larger than the sum of its proper divisors (1).

73139189759947 is an equidigital number, since it uses as much as digits as its factorization.

73139189759947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240609120, while the sum is 82.

The spelling of 73139189759947 in words is "seventy-three trillion, one hundred thirty-nine billion, one hundred eighty-nine million, seven hundred fifty-nine thousand, nine hundred forty-seven".