1516750008401 has 2 divisors, whose sum is σ = 1516750008402. Its totient is φ = 1516750008400.

The previous prime is 1516750008343. The next prime is 1516750008419. The reversal of 1516750008401 is 1048000576151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1448315971600 + 68434036801 = 1203460^2 + 261599^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1516750008401 is a prime.

It is not a weakly prime, because it can be changed into another prime (1516750008001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 758375004200 + 758375004201.

It is an arithmetic number, because the mean of its divisors is an integer number (758375004201).

Almost surely, 2^{1516750008401} is an apocalyptic number.

It is an amenable number.

1516750008401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1516750008401 is an equidigital number, since it uses as much as digits as its factorization.

1516750008401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33600, while the sum is 38.

The spelling of 1516750008401 in words is "one trillion, five hundred sixteen billion, seven hundred fifty million, eight thousand, four hundred one".