61470736973 has 2 divisors, whose sum is σ = 61470736974. Its totient is φ = 61470736972.

The previous prime is 61470736963. The next prime is 61470736981. The reversal of 61470736973 is 37963707416.

61470736973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58875140164 + 2595596809 = 242642^2 + 50947^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61470736973 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61470736933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30735368486 + 30735368487.

It is an arithmetic number, because the mean of its divisors is an integer number (30735368487).

Almost surely, 2^61470736973 is an apocalyptic number.

It is an amenable number.

61470736973 is a deficient number, since it is larger than the sum of its proper divisors (1).

61470736973 is an equidigital number, since it uses as much as digits as its factorization.

61470736973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4000752, while the sum is 53.

The spelling of 61470736973 in words is "sixty-one billion, four hundred seventy million, seven hundred thirty-six thousand, nine hundred seventy-three".