73766739947 has 2 divisors, whose sum is σ = 73766739948. Its totient is φ = 73766739946.

The previous prime is 73766739941. The next prime is 73766740031. The reversal of 73766739947 is 74993766737.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (74993766737) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73766739947 - 2¹² = 73766735851 is a prime.

It is not a weakly prime, because it can be changed into another prime (73766739941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36883369973 + 36883369974.

It is an arithmetic number, because the mean of its divisors is an integer number (36883369974).

Almost surely, 2^73766739947 is an apocalyptic number.

73766739947 is a deficient number, since it is larger than the sum of its proper divisors (1).

73766739947 is an equidigital number, since it uses as much as digits as its factorization.

73766739947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252047376, while the sum is 68.

The spelling of 73766739947 in words is "seventy-three billion, seven hundred sixty-six million, seven hundred thirty-nine thousand, nine hundred forty-seven".