72046995961 has 2 divisors, whose sum is σ = 72046995962. Its totient is φ = 72046995960.

The previous prime is 72046995941. The next prime is 72046995997. The reversal of 72046995961 is 16959964027.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70689515625 + 1357480336 = 265875^2 + 36844^2 .

It is an emirp because it is prime and its reverse (16959964027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72046995961 - 2¹³ = 72046987769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72046995896 and 72046995905.

It is not a weakly prime, because it can be changed into another prime (72046995941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36023497980 + 36023497981.

It is an arithmetic number, because the mean of its divisors is an integer number (36023497981).

Almost surely, 2^72046995961 is an apocalyptic number.

It is an amenable number.

72046995961 is a deficient number, since it is larger than the sum of its proper divisors (1).

72046995961 is an equidigital number, since it uses as much as digits as its factorization.

72046995961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7348320, while the sum is 58.

The spelling of 72046995961 in words is "seventy-two billion, forty-six million, nine hundred ninety-five thousand, nine hundred sixty-one".