1520506014997 has 2 divisors, whose sum is σ = 1520506014998. Its totient is φ = 1520506014996.

The previous prime is 1520506014967. The next prime is 1520506015073. The reversal of 1520506014997 is 7994106050251.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1338762388401 + 181743626596 = 1157049^2 + 426314^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1520506014997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1520506014997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1520506014917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760253007498 + 760253007499.

It is an arithmetic number, because the mean of its divisors is an integer number (760253007499).

Almost surely, 2^{1520506014997} is an apocalyptic number.

It is an amenable number.

1520506014997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1520506014997 is an equidigital number, since it uses as much as digits as its factorization.

1520506014997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 680400, while the sum is 49.

The spelling of 1520506014997 in words is "one trillion, five hundred twenty billion, five hundred six million, fourteen thousand, nine hundred ninety-seven".