73207411649 has 2 divisors, whose sum is σ = 73207411650. Its totient is φ = 73207411648.

The previous prime is 73207411639. The next prime is 73207411657. The reversal of 73207411649 is 94611470237.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70792180624 + 2415231025 = 266068^2 + 49145^2 .

It is a cyclic number.

It is not a de Polignac number, because 73207411649 - 2²⁸ = 72938976193 is a prime.

It is a super-2 number, since 2×73207411649² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73207411609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36603705824 + 36603705825.

It is an arithmetic number, because the mean of its divisors is an integer number (36603705825).

Almost surely, 2^73207411649 is an apocalyptic number.

It is an amenable number.

73207411649 is a deficient number, since it is larger than the sum of its proper divisors (1).

73207411649 is an equidigital number, since it uses as much as digits as its factorization.

73207411649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 44.

The spelling of 73207411649 in words is "seventy-three billion, two hundred seven million, four hundred eleven thousand, six hundred forty-nine".