1520974674073 has 2 divisors, whose sum is σ = 1520974674074. Its totient is φ = 1520974674072.

The previous prime is 1520974673987. The next prime is 1520974674091. The reversal of 1520974674073 is 3704764790251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1497385400329 + 23589273744 = 1223677^2 + 153588^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1520974674073 is a prime.

It is not a weakly prime, because it can be changed into another prime (1520974674173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760487337036 + 760487337037.

It is an arithmetic number, because the mean of its divisors is an integer number (760487337037).

Almost surely, 2^{1520974674073} is an apocalyptic number.

It is an amenable number.

1520974674073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1520974674073 is an equidigital number, since it uses as much as digits as its factorization.

1520974674073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8890560, while the sum is 55.

The spelling of 1520974674073 in words is "one trillion, five hundred twenty billion, nine hundred seventy-four million, six hundred seventy-four thousand, seventy-three".